Add top-level API for changing variable values #1145
Description
This is a stub issue to remember to make move the code in GUI that is setting variables from monitors into the VM.
From the review on scratchfoundation/scratch-gui#2019
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This is a stub issue to remember to make move the code in GUI that is setting variables from monitors into the VM.
From the review on scratchfoundation/scratch-gui#2019