IsBlank (Filter)


Tests if fields in an argument are white space, empty (""), or null. Records that meet the conditions are passed on within the Flow. 

The IsBlank filter is often used in Flows to check if a field value exists before the next steps are run. For example, use the filter to only run a SQL Lookup on the tuples with the specified lookup value.

This filter function is similar to the filters IsEmpty and IsNull.  They are all variations of checking if a value exists . The opposite of these filters are IsNotBlank, IsNotEmpty, and IsNotNull.


  • Input field:
    • Select a field. (String) 

Hero Platform_ Example

An example of this function can be found in Hero Platform_'s library of examples.

Download the example titled "function_IsBlank" to see an example of this function.