Find Children with two consecutive filters

Im trying to add two filters in the same Find Children activity. I’ve tried all the scopes (usually working in FIND_DESCENDANTS) but it keeps throwing the same error:

The specified combination of selector, filter and scope is not supported.

This is the syntax of my filter

I know that this button exist, cos i extracted that text specifically from a click instance, clicking in the button, then extracting the last two lines of the selector. The idea is to want to find this button with Find Children activity automatically.

Thank you

syntax of the filter:

ctrl name=‘作業ステップ’ role=‘page tab’ /><ctrl idx=‘9’ role=‘radio button’ /

(this is in "< brakets but the sentence dissapears if i write them)