How do I use ternary operator with boolean variables?

Hi Ashley

I want to use ternary operator with 'boolean variable'. How to proceed?

Example with number variable:-

is_num=99?56:45 (it works)

but with boolean variables:-

is_ok=true?45:90 (it doesn't works. it does not even identify 'true')

You can use 1 and 0 for true/false

Thanks a lot for the reply