Creating a custom logic in my questionnaire

Hello Kobotoobox community.

I have encountered a problem while I was trying to use a custom logic in one of the questions of my form. It keey refusing me, So can you help me on this. I have used this formula when I am setting the custom logic ${Children_aged_6_59_months_livi}>‘0’

Welcome back to the community, @mohd23! Maybe this post discussed previously should help you solve your issue: