Errors with optional Inputs for manual trigger

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Posted on by _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.'.

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Building flows

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annajhaveri 8,531 Most Valuable Professional on at

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

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_tmh 9 on at

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Yes! Sorry if that was not clear.
-Todd

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annajhaveri 8,531 Most Valuable Professional on at

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

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_tmh 9 on at

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

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Mx81 860 on at

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

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