Attachment control, change file name

[HansHeintz]

I am using the attachment control to save files to sharepoint using this code

Set(VarDemoFromAttachmentControl;JSON(Image8.Image;JSONFormat.IncludeBinaryData))
;;Set(VarImage;Image8.Image)//
;;Set(Base64Only;Mid(VarDemoFromAttachmentControl;Find(",";VarDemoFromAttachmentControl)+1;Len(VarDemoFromAttachmentControl)-Find(",";VarDemoFromAttachmentControl)-1))
;;Set(VarFileName;Last(AttachmentControl.Attachments).Name)
;;UpdateContext({lOmschrijving:VarFileName})
;;Set(VarFileLink;PowerAppsToSharePoint_3.Run(Last(AttachmentControl.Attachments).Name;Base64Only).sharepointfilelink)
;;Reset(AttachmentControl)
;;Reset(TextInput8)

I got from a Sean Young video.

I found that if I get a file of which the filename already exists it is just overwritten without any warning.
I tried doctoring the filename with a piece of guid

Set(VarDemoFromAttachmentControl;JSON(Image8.Image;JSONFormat.IncludeBinaryData))
;;UpdateContext({FileGUID:Right(GUID();6)})
;;Set(VarImage;Image8.Image)//
;;Set(Base64Only;Mid(VarDemoFromAttachmentControl;Find(",";VarDemoFromAttachmentControl)+1;Len(VarDemoFromAttachmentControl)-Find(",";VarDemoFromAttachmentControl)-1))
;;Set(VarFileName;Last(AttachmentControl.Attachments).Name)
;;UpdateContext({lOmschrijving:VarFileName})
;;Set(VarFileLink;Substitute(PowerAppsToSharePoint_3.Run(Last(AttachmentControl.Attachments).Name;Base64Only).sharepointfilelink;Last(AttachmentControl.Attachments).Name;FileGUID & Last(AttachmentControl.Attachments).Name))
;;Reset(AttachmentControl)
;;Reset(TextInput8)

but it just saves with the same name although variable varfilelink does look good.
If I add the guid to the back of varfilelink (molesting the file extension) it DOES save the file with the wrong extention to sharepoint.

Of course this can all be easily solved, just a trifle, but .. how?

[HansHeintz · Accepted solution]

Already found a soulution. Only accept extentions eh? Well just Add the guid and then the .extention again. An unique filename at last