If Then calculation

I am trying to do a basic if-then calculation, but have not been able to find the right info in the formcalc manual or other forum posts so far.
 
I have a table with the first column being check boxes of various values, the second column is merely text. One set of calculations is based on the varying values of the check boxes, but I have created an invisible set of corresponding text fields that I need to simply have a value of "1" if the check box is "on"
 
My first row in the table is as follows:
cell1 is a check box named "TheoConstruct" (with a value of 2 for on and 0 for off), cell2 is a text box with text.
 
I have a text field separate from the table in which I would like to make the calculation. This text field is named "class1"
 
I'm new to formcalc, so I know this is probably fairly simple, but I don't know how to make it work.
 
What I need to know is how to write the following in proper formcalc.
 
If TheoConstruct = 2 then class1 = 1.
 
(TheoConstruct (Cell1 which I renamed) is Row1 of Table1)
Thank you for your help!