update dataverse table with dataverse primary key results in datatype error

hi all - just a quick update if anyone stumbles across this issue:

Dataverse as a managed solution blocks overriding a foreign/ alternative key, you can only update the dataverse primary key. In an unmanaged solution it’s the reverse I think, you can only update the alternative key, not the dataverse primary key.

the dataverse primary key is a GUID which cannot be stored in a text box as per issues above (that will show up as ???? In VBA). Solution : it can be stored in a combo box as a workaround, which as it turns out is compatible with GUID.