Hi there, @katsuyadaisuko… long story short, uncheck the This input should not be empty box, and you should get the desired result.

The reason it’s not working as expected (assuming I understand your post correctly) is because the workflow isn’t able to run because you are referencing the input element in the workflow, and the input is not allowed to be empty. If you uncheck the box, the workflow will run when the button is clicked and the input’s value is empty, and ‘abc’ will appear in the previously empty input.

Hope this helps.

Best…
Mike

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