Some GXs cannot be run from a script. These include those that call GUI elements such as the histogram tool, or the colour symbol tool. However, most GXs can be recorded and run successfully in a batch mode, provided that the suggested program flow outline is adhered to. In particular, the following points are important:

Keep interactive elements sequestered from the processing code by using the “if (iInteractive_SYS()” statement.
Keep non-scripting style functions (EDB,EMAP) sequestered from scriptable code by using the “if (iScripting_SYS()” statement.
Make use of the workspace parameter block to store required values. The SetInfoSYS_DGW and GetInfoSYS_DGW functions use the workspace parameter block, so once the GX is run once interactively the required parameters are set. The parameters are retrieved using the GetString_SYS, GetReal_SYS and GetInt_SYS functions.
Ensure that the parameters are properly checked and verified, as an aid in debugging and running the GX.

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