Hello,
I'm looking for a solution for the following problem in @powerapps:
I have a @collection, Shown beneath.

Now I want to create @dropdowns that correspond with this collection.
So for example if I select Brand "HP" I want a dropdown of "Model" to show "PROBOOK S1" and "PROBOOK B99"
And If I select "Lenovo" I want it to only show "Model X".
So combination like this are impossible

Because Lenovo doesn't have the PROBOOK series. Only when Brand is HP I should be able to select the PROBOOK S1.
Basically I'm looking for a way to force users to always selected values that match in the collection
I hope someone can help me,
Thanks in advance!