Place Via in conductive shape

Hi there

I have a Power resistor that has a heatsink, the heatsink pad is made with a conductive shape element (in the library). I can assign a net to the conductive shape , but i am having difficulties placing Via's in the conductive shape. The only way i founf it is to turn off the DRC, anyone know if there is another way how i can do this ?

We are running on 7.9.5 soon we will upgrade to VX.1