BadMapper - Different softedges

Hello everyone :)
I need to manage a projection on three walls with four projectors: I need two hardedges and one softedge.
I tried to use the GridMapping with SoftEdge and Masking patch of VL.BadMapper library, but the SoftedgeParams node sets the same softedge for all the projectors.
The SoftedgeParams (finegrained) node allows to set different softedges for each projector, but is not supported by GridMapping node.

Do you have any suggestion?

Thank you very much :)