The basic problem is that RSLogix5000 cant use a pointer from an array. It has to be a stand alone tag. But the next problem you will have is 5000 does not allow indirect pointer to arrays. But fear not there is a way. See my thread here on how to use a message instruction for the PLC to read to itself and then you can indirect tags and tag arrays. http://www.plctalk.net/qanda/showthread.php?t=105602