How to delete a repeat region and insert a new one

Hello,

I have been trying for days to delete a repeat element in the database and add a new one. It is not working so far. I tried the conditional step it is not working also.

I am trying to delete all element in the database not equal to the selected value.
Insert element that have been selected.

Any help will be very welcome.
Happy holiday to all wappler community.

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