{{userInfoFormGroup.controls.dataType.errors.numeric.message}}
If you want to apply conditional validation on 'Real Number' then you need to add 'Data Type' input as 'Real'.
Conditional Expression with type 'string'
{{userInfoFormGroup.controls.realNumber.errors.numeric.message}}
If you want to apply conditional validation on 'Integer Number' then you need to add 'Data Type' input as 'Integer'.
Conditional Expression with type 'function'
{{userInfoFormGroup.controls.integerNumber.errors.numeric.message}}