@TronWi did you try printing Microsoft Print to PDF  as suggested by @gvdpatida1 

@TronWi , Can you share both working and non-working files?

@varaande we tried to reproduce the disabled error. It seems to be working for us. Can you share your console logs?

@fprogrammer , Which forms are you using Foundation Components based forms or Core Components based forms?

@MohammadUs2 , did you try @Utkarsh_24 's suggestion?

The following article provides links to download the latest designer:  https://experienceleague.adobe.com/en/docs/experience-manager-release-information/aem-release-updates/forms-updates/aem-forms-releases You would require access to Adobe Software Distribution portal to download the designer. 

Can you elaborate your use case? We may have different means to achieve it. 

AEMaaCS does not include Letters / Correspondence Management. 

You can create a custom function and invoke it using a rule. The following documentation provides detailed information about custom functions along with examples:https://experienceleague.adobe.com/en/docs/experience-manager-cloud-service/content/forms/adaptive-forms-authoring/authoring-adaptive-form...

@aravindS , Can you provide the information requested by @pankajpr to help you further?