Regard load detail PO line accroding to choose PO#+linenum

Hi,Expert,

The scenario is as follow:

I create the form to copy from PO detail list , so I must get docentry + linenum that is primary key.

but loading PO line are so many that the system of PC halted.

Now I add the primary key of docentry + linenum as array form.

and then by running sql query to add martix .

How can I do to get a better solution?

Apperciate your help .

Best Regard

Eric Wang