IsNumber does not seem to work in Alteryx 10.5

[mpurdy]

Just wondering if someone else could test this as it doesn't appear to be working for me in 10.5? It used to work for Strings (when a integer was formatted as a string) but now it only appears to work for Numbers (when formatted as numbers). Thanks

[Jean_F]

I finally implemented the solution of Joe_Mako but a great thanks to all of the answers given !