>I've fixed this problem by using a parameter object but would like to see if someone can explain why this happens.
>
>I have a UDF:
>
>

>FunctionX
>
>Parameter pArray
>

Try adding <b>EXTERNAL ARRAY pArray</b>

>For nCnt=1 to aLen(pArray,1)
>   Seek(pArray[nCnt,1],"ATABLE")
>EndFOr
>
>Return
>

>
>This work:
>

>FX="FunctionX(@myarray)"
>&FX
>

>This causes an error:
>

>FX="FunctionX(@myarray)"
>Select * From SomeTable Where &FX to cursor SomeCursor
>

>The error come from the UDF saying that pArray.prg is not found.
>
>Any ideas?

If you're really doing something like this, you're likely to hurt yourself with all sorts of potential side-effects.