Using conditions if / else in Kantu IDE

I'm junior automation QA Engineer. Now I'm try acquainted with Kantu IDE. I'm have project where in HTML using BEM-Methodology. Task - build verification about the existence class in certain div Question - how corretly build verification with help commands if/else?

I have this tree:

<div class="bets">

</div>

but to this div from through JS adding class="blocked" or class="disabled". Our task click at this element if he doesn't have additional class="blocked" or class="disabled". Thank you for help.