Assiging one parameter as thinkness of few shell objects

[krzyskle99]

hey, 
Is it anny possibility to assign one parameter as thinkess of few shell objects? I want to direct optimatization of the structure and it is necessary that several shell objects have the same thickness. Unfortunately, in mechanical, it is not possible to select the input parameter, and in the optimisation module it is only possible to give the relation smaller or larger. I would be very grateful for any tip
 

[Govindan Nagappan]

I have 2 parameters(p1 and p2). Using expression, I have set P2=P1. Notice P2 is greyed out. In the table of design points, you will have to modify only one parameter which is P1.

You can use mathematical expressions

For more details, check Expressions, Functions, Quantities, and Units