Linking objects and expressions

[#1]

Hello,

I created a container with four different tables. In one table I want to show summary including the totals of three other tabs - Rx, Samples, Coupons. 

What I want to do is use the expression created in all three tabs without re entering whole thing again.

thanks

[rustyfishbones]

you can create the expressions as variables and then just call the variables

[#3]

Can you provide me an example of how to use variables?

I have too many formulas. Do I have to create multiple variables?

[Clever_Anjos]

You gonna need one variable to each expression you want to 'link' between the tables

[Clever_Anjos]

PFA an example