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The variable 'varApprovers' of type 'Array' cannot be initialized or updated with value of type 'String'. The variable 'varApprovers' only supports values of types 'Array'.

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Posted on by leverson

This post relates to youtube video : https://www.youtube.com/watch?v=gb_FUeRjgg4

where in the example code posted to github produces the error "The variable 'varApprovers' of type 'Array' cannot be initialized or updated with value of type 'String'. The variable 'varApprovers' only supports values of types 'Array'."

The final setup shows an update to the varApprovalHistory which was previously defined as an array

joined

and then attempts to update (using set variable) as a string

what should be the correct way to update this?

I assume it shoudl be an append to array variable not a "set variable"

Question for @rezza

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Building flows

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Redders 546 on at

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Hi @leverson,

I found the video around the section that you are talking about quite hard to follow however, I have done this flow in a small attempt to replicate

Here is the result

The point being is that I don't think that you need to add the last step

Just update your item with the output from the join

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grantjenkins 11,063 Moderator on at

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One thing to note here is that you initialize an empty array varApprovalHistory and they try to join this with your string "-------------", but you have no items in your array to join (your array is empty).

And then you assign the value of Approval History from SharePoint to the array which seems to be of type string which is why you get the error.

What you want to do it add your items to the array first and then join them with "-----------------".

To give you the proper solution we need to know what's contained in your Approval History item you are getting from SharePoint. Can you share the output from Approval History to see what you are trying to join?

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Mryan3001 8 on at

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I am having the same issue. This is the message :
BadRequest. The variable 'varApprovalHistory' of type 'Array' cannot be initialized or updated with value of type 'String'. The variable 'varApprovalHistory' only supports values of types 'Array'.

However, the SharePoint list still updates correctly. How is this possible?

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