Build the game ROM using Game->Export As->Export Rom and upload the game.map file located in the build\rom folder in your project's directory
Export Project Source using Game->Advanced->Export Project Source and upload the game_globals.i file located in the build\src\include\data folder in your project's directory
Click the Start button to process the files
Select a variable from the dropdown to calculate its hex address
Tested to work on games made with GB Studio version 4.1.3 Other versions may store the files in different locations, or use different formats. Try it anyways!
File Upload
Results
Base Address:
Not yet calculated
Selected Variable Index (Decimal):
Not yet selected
Selected Variable Index (Hex):
Not yet calculated
Final Result (Base Address + Variable Index in Hex):