patching a signature to sharepoint list

[Anonymous]

I have a pen input that saves a signature into a variable (varBlob3). This is created on success of a click of a button Set(varBlob3,JSON(PenInput3.Image,JSONFormat.IncludeBinaryData)).

I want to patch the link (data:image/png:base64...to a column in sharepoint. On my submit button, I use this formula: Patch('Service Report PDF', First(Filter('Service Report PDF', Customer=DataCardValue39.Text)), {CustomerSignature:varBlob3}) but it's not updating in my Sharepoint list.

Any ideas? Thanks!

[WarrenBelz · Accepted solution]

Hi @Anonymous ,

Assuming you have checked the Variable varBlob3 to ensure you actually have data in it, put this on a Label

First(
   Filter(
      'Service Report PDF', 
      Customer=DataCardValue39.Text
   )
).ID

and see if it displays the ID of the record you want to patch to.

You can also use

LookUp(
   'Service Report PDF', 
   Customer=DataCardValue39.Text
).ID

to avoid the Delegation warning

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[Anonymous]

Thank you so much! That helped me realize the issue and also helped me with figuring out the delegation issue. Thanks!

[Anonymous]

One follow-up question. I got it to work but the first time I had someone out in the field collecting a signature, it didn't save to the Sharepoint list. Is there any way of recovering the data that was collected in the variable? Thanks!