Checkbox counted as string in Charts

I wanted wanted to create a hard filter (not a result filter) based on a checkbox in the vertical axis, where a checkbox being true was included, and false not. The checkbox there is counted as a string instead of boolean.

Hi @Haslien,
I’m curious as to what you mean by a ‘hard filter’?
If I have a checkbox as the vertical axis in a chart, then it shows as false and true, and I can apply a filter to the chart to limit which option is shown.
Perhaps you can help me understand what you’re getting at.

This doesn’t really relate to the checkbox being treated as a string.

Essentially, this.

COUNTIF([Count This Thing], [Checkbox] == "true")

I don’t want this condition to be a possible option using the result filter: