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Power Platform Community / Forums / Power Automate / 'The template language...
Power Automate
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'The template language function 'length' expects its parameter to be an array or a string.

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Posted on by CU19021437-1
Unable to process template language expressions for action 'Condition' at line '0' and column '0': 'The template language function 'length' expects its parameter to be an array or a string. The provided value is of type 'Null'. Please see https://aka.ms/logicexpressions#length for usage details.'.
 
// greater(length(coalesce(outputs('Get_emails_(V3)')?['body/attachments'], array())), 0) is equal to true//

// length(outputs('Get_emails_(V3)')?['body/attachments']) is geater than 0 //
 
I have traied above formula iam not getting it throws error.
 
 
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  • Suggested answer
    David_MA Profile Picture
    David_MA 14,090 Super User 2026 Season 1 on at
    Based on your post, it appears that you are trying to determine if the e-mail contains attachments. If so, change you condition to the value Has Attachments from the trigger is equal to true.
     
    If this is not what you are trying to do, please explain your goal.
     

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