Compare textbox text to a list

MIT App Inventor Help
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1

I am attempting to compare the text inputed into a textbox to the elements stored in a list, however, I do not know how to format it. My current code is:

forum1
image

The only thing I cant get to work is comparing InvisibleTextBox.Text to the RecallList variable
Thank you for any help.

2

You probably need a construction like this:

isInList