Tissue detection on TMA

Hello.
I am analyzing TMAs, and “tissue detection” does no appear in my Qupath. How can I solve it?

Tissue detection is not really intended for use in 0.2.0, as it was replaced by the Thresholding tool:
https://qupath.readthedocs.io/en/latest/docs/tutorials/thresholding.html#thresholders-in-qupath

The old command can still be found at the bottom of the Analyze menu.