Create QC-Order every 5000 pieces received

Hi,

We want a QC-Order every 5000 pieces received. 
A counter on Suplier + Itemcode and every 5000 received a QC-order should be created.

I don't see how this is possible now, but would be nice to have.
(Or the possibility to create a loose QC-order.

Regrds,
John