Is it possible to create a "memory" of a varible?

Hi,

I want to be able to define a stress point in space that comsol should remember until a certain condition and then it should change to a new stress point memory. It is a time dependent problem.

Have anyone done this? Is it possible?

I would also like to be able to shift a low stiffness modulus, Eu, to a high stiffness modulus, Er, for a very short time step, as small as possible.. Tried to use flc2hs functions but don't get to work.

Does anyone have any suggestions?

Regards,

Mats