UDS source term problem
 

i have two uds for scalar n0 and n1

now i want to add a source term "gradient (gradient n1)" in n0's equation

but i only find that gradient n1=C_UDSI_G(c,t,1)

how about "gradient (gradient n1)" ?

Set another additional UDS2 and let UDS2=C_UDSI_G(c,t,1), Then C_UDSI_G(c,t,2) is what you want.

thanks for your anwser. There's another quastion about the error about type of variables.

C_UDSI(c,t,2) can't be equal to C_UDSI_G(c,t,1) seems like

that C_UDSI(c,t,2) is a scalar but C_UDSI_G(c,t,1) is a vector?