Finding material parameters within blueprints.

So what I am trying to do is create a dynamic material that has texture parameters visible so that as I procedurally generate floors it will replace part of the dynamic material. However I am unable to figure out how to open the parameters from the material within blueprints. I have looked everywhere but have yet to find any reference. I am hoping that maybe someone knows how. I will also post pictures if necessary.

Thanks for taking the time to read and respond. If questions I can respond.

it depends on the type of parameter. for instance there is a set scaler parameter node.