Plugin not working variable products

Hi,

I have a problem with setting up compatible products.

For example.

In Step 1 I have multiple products. Step 1 is about Solar Panels. In that step if a customer select like 6 QUANTITY (it has 6 times solar panels with a ATTRIBUTE like 600 WATTPIEK). Then it goes to next step.

But on the next step not all products here are COMPATIBLE with that 6 units. Because it is based on that QUANTITY and WATTPIEK. I can add attributes to see if compatible. But how to do this? You said in plugin that it’s possible. But I don’t see function for this..