How to retrieve value from the table with other table's data and parameter

Hi,

when I use the real number, I can retrieve the values.

This is what I want.

スクリーンショット 2020-07-30 16.37.53

But when I set like below,

I can’t get what I want like above. where did I do wrong?

スクリーンショット 2020-07-30 16.39.35

Thanks

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