Errors with optional Inputs for manual trigger

[_tmh]

Using manual trigger.

Asking user for start date (required) and end date (optional).

Based on input I will build the oData query string.

Need to test if the end date is Empty? Exists? IsNull?  Tried most of this but maybe I just don't have the right combination.

I'm not sure what to do with this.

If there is no entry and I try to use it, it errors saying:
Unable to process template language expressions in action 'Initialize_strEndDT' inputs at line '1' and column '14743': 'The template language expression 'triggerBody()['text_1']' cannot be evaluated because property 'text_1' doesn't exist, available properties are 'text'. Please see https://aka.ms/logicexpressions for usage details.'.

[annajhaveri]

So are you facing error in check whether End Date is empty or not?

[_tmh]

Yes! Sorry if that was not clear.

-Todd

[annajhaveri · Accepted solution]

Please check this blog https://www.bythedevs.com/post/how-to-pass-a-null-value-as-an-input-while-using-a-manual-trigger-in-...  it will help you, if you face any further issues let me know 

[_tmh]

Thanks for your reply.  I have not had a chance to test.  Will update when I'm able.

[max81]

@annajhaveri : thanks. I had the same problem, and your hint solved it for me.