Can not use .pzCaptchaAnswer to validate CAPTCHA
Based on the article below, I created a CAPTCH and implement it in the flow before a submission. Showing the image is OK and I can see pxRequestor.pzCaptchaAnswer but I can not use pzCaptchaAnswer property in a validation rule or a data transfer. It throw an error like "Property Code-Pega-Requestor.pzCaptchaAnswer is undefined."
It seems to be pzCaptchaAnswer is only generated when pyGenerateCaptcha activity runs. I can see it in the clipboard but I still can not use it...
Does anyone know why this happen...
How to create captcha in pega?
https://community1.pega.com/community/product-support/question/how-create-captcha-pega
***Moderator Edit-Vidyaranjan: Updated Platform Capability***