Hello,
If the message shows but only the variable does not, it should indicate the element is called correctly but cannot read the binary. Could you please check if the input cliams for your displaycontrol is correctly defined?
It would be helpful if you add B2C tag to the post since the issue is related.
Best Regards,
Ian Xue
If the Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.