Show/Hide Icon in Grid Based on Column Value

Could you give me a point in the right direction on the syntax for this? I have a column (not shown) for Status - if < 0, display the Red X; if >= 0, display the green check. Or if there's a better way to do this, please let me know.

Thank you!

Conditional templates demos is here:

Awesome - I'd missed that in my search. I'll try it out in the morning.