[Tushar_Telmasre]

While defining field function, is there any way one can access the previous time step value while defining a custom field function?

For Example, if my field function is defined as

C_mix= (C_new-C_old)*Liquid fraction
where,
C_old is the concentration value at previous time step and C_new is the concentration value at present time step at a cell node.

the present time step value can be obtained from the drop down menu but I also need the previous time step value. Is there any way I can get it?