Update Command

I am having trouble trying to figure out how to properly enter a checkbox in the SET statement so I can update the checkbox value based on user's input.
I know for number values you enter the variable like this:
Code:

Owner = own

and for text you enter like this:
Code:

Priority = 'pri'

and for dates you enter the variable like this:
Code:

tdate = #td#

but how do you create the variable in the SQL statement so it updates a checkbox value?
Below is my SQL statement, and the checkbox name is "Active" Code: