Substitution

[ptc-4680450]

Hy to everyone please help me with this probleme

a:=3

b:=5

c:=a+b=3+5=8

[Fred_Kohlhepp]

You can do this; but it's a parlor trick-- not worth the effort.

[ptc-4680450]

thanks for trick

[ValeryOchkov]

See too http://communities.ptc.com/message/190243#190243