Ok, here is the complete code to reproduce the problem. Load parameter_test.msl which includes functions.msl. From the screenshot you see the variables containing 
garbage, and you also see that from the ODB screenshot. For completeness, I added Sequencer.json which contains the whole sequencer tree.

The interesting thing is that this works sometimes, and sometimes not. I'm not sure if this in the GUI or in the sequencer program, so we have to sort out who can 
fix it ;-)

Best,
Stefan

{
   "/MIDAS version": "2.1",
   "/filename": "Sequencer.json",
   "/ODB path": "/Sequencer",
   "State": {
      "New File/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "New File": false,
      "Path/key": {
         "type": 12,
         "item_size": 256,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Path": "",
      "Filename/key": {
         "type": 12,
         "item_size": 256,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Filename": "param_test.msl",
      "SFilename/key": {
         "type": 12,
         "item_size": 256,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "SFilename": "/Users/ritt/online/userfiles/sequencer/param_test.msl",
      "Next Filename/key": {
         "type": 12,
         "num_values": 10,
         "item_size": 256,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Next Filename": [
         "",
         "",
         "",
         "",
         "",
         "",
         "",
         "",
         "",
         ""
      ],
      "Error/key": {
         "type": 12,
         "item_size": 256,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Error": "",
      "Error line/key": {
         "type": 7,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Error line": 0,
      "SError line/key": {
         "type": 7,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "SError line": 0,
      "Message/key": {
         "type": 12,
         "item_size": 256,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Message": "",
      "Message Wait/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Message Wait": false,
      "Running/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Running": true,
      "Finished/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Finished": false,
      "Paused/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Paused": false,
      "Debug/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Debug": false,
      "Current line number/key": {
         "type": 7,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Current line number": 46,
      "SCurrent line number/key": {
         "type": 7,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "SCurrent line number": 20,
      "Follow Libraries/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Follow Libraries": true,
      "Stop after run/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Stop after run": false,
      "Transition request/key": {
         "type": 8,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Transition request": false,
      "Loop start line/key": {
         "type": 7,
         "num_values": 10,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Loop start line": [
         43,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0
      ],
      "SLoop start line/key": {
         "type": 7,
         "num_values": 10,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "SLoop start line": [
         17,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0
      ],
      "Loop end line/key": {
         "type": 7,
         "num_values": 10,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Loop end line": [
         47,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0
      ],
      "SLoop end line/key": {
         "type": 7,
         "num_values": 10,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "SLoop end line": [
         21,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0
      ],
      "Loop counter/key": {
         "type": 7,
         "num_values": 10,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Loop counter": [
         6,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0
      ],
      "Loop n/key": {
         "type": 7,
         "num_values": 10,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Loop n": [
         0,
         0,
         0,
         0,
         0,
         0,
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         0,
         0,
         0
      ],
      "Subdir/key": {
         "type": 12,
         "item_size": 256,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Subdir": "",
      "Subdir end line/key": {
         "type": 7,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Subdir end line": 0,
      "Subdir not notify/key": {
         "type": 7,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "Subdir not notify": 0,
      "If index/key": {
         "type": 7,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "If index": 0,
      "If line/key": {
         "type": 7,
         "num_values": 10,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "If line": [
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0
      ],
      "If else line/key": {
         "type": 7,
         "num_values": 10,
         "access_mode": 7,
         "last_written": 1714720819
      },
      "If else line": [
         0,
         0,
         0,
         0,
         0,