>Thanks Dean,
>
>I experimented a bit further and oddly enough I noticed that the command
>

DO FORM OrderSelect WITH -1, laOrderIDs

>does actually pass the whole array. That’s good but I thought it didn’t work this way. My UDFPARMS is set to VALUE. Is this reliable?

SET UDFPARMS has no effect on DO/DO FORM commands which always pass parameters by reference. You can force them to be passed by value by enclousing them in parenthesis.