MuPad Subs not working

Hi,

I am trying the following substitution in MuPad:

subs(x*(l2*m1*m3),[l2*m1*m3 = L1_C1])

It only works when I remove the x term. x is a variable and the rest are constants, but I think maybe I haven't defined them properly?

Thanks

Toby

[Toby Howison]

SOLVED: use subsex

[Walter Roberson]

Was it = you used or == ? I think = would have been invalid syntax.

[Toby Howison]

= works fine it seems