Custom Visual textbox - Need to restrict user to input only numeric/ decimal value

[Neerja17]

I have created a custom textbox visual that currently takes any value as datatype is "text". When used in a particular report, I want that user can input only numeric/decimal values to it. I want to keep the textbox as generic so I can re-use the same custom textbox for different filtering options.

Attached screenshot for reference..

How can I do it? 

[lbendlin]

Not currently possible. Why not use the filter pane which checks column types for you?

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