how to achieve "if field value is NOT null" logic branching in flow designer?

[AndrewB1]

To make a long story short, I've tried a number of things and am unable to create and IF branch in a flow that runs only when a task field is NOT empty.  The goal is to send out approvals to the individuals in an "additional_approvers" field if that field contains values, otherwise the flow ends.  Is there any reason why simply using the IF conditional set to "is not" then leaving the next field blank shouldn't work for this?

Alternatively, would it be reasonable to create a custom action that might return T/F based on whether input is null, as a workaround?

[Purna1 · Accepted solution]

In old version, We are using "is not" from filter and leave as black but in latest version(Quebec) we have OOTB functions.
ServiceNow has provided OOTB box utilities functions. We can call the function to check the data pill is blank or null value.
Please find the reference screenshot.

For more information. Please refer below link

https://docs.servicenow.com/bundle/quebec-servicenow-platform/page/administer/flow-designer/reference/utilities-transform-functions.html#d1097001e249