How to process negative number in Microflow ?

Hi Team,        I have integer type customer Id text field, if feed the customer id as negative number then i have to fire custom message from the microflow.       but in microflow , I am getting always empty value instead of negative number.      please help me, how to process negative number in Micorflow  ?   
1 answers

From your problem description, I don’t exactly understand your setup. For that reason I do also not understand why your value is empty in your microflow.

Nevertheless: a good option is to go to your domain, select the entity and set a validation-rule for that attribute. Here you also can set the message shown in case of validation-error.