Jim,

Arrays MUST be passed by reference, this means that the called routine is changing the array that was passed, so ...

DIMENSION laArray(2)
laArray(1) = "abc"
laArray(2) = "def"

MyFunc(@laArray)  && the @ forces "pass by Reference"

?laArray(1) && shows 123
?laArray(2) && showa 456

FUNCTION MyFunc
LPARAMETERS paArray
paArray(1) = "123"
paArray(2) = "456"
RETURN
ENDFUNC