Hello @todward,
tha IDE 2.0 is quite ancient and it dates to the times when the HMI editor and IDE has been separated and the API has been different. In current Mervis IDE 2.3.0, the API is working:
0_1588855031312_2f0b6a41-a698-4be5-9cff-ea7b715b197c-image.png
On a side note, you can make variables available over ModbusTCP or BACnet/IP server in the Mervis 2.3.0. Maybe it will be more convenient for your other system.
Best regards,
Martin