Issue

Currently we have a WhatsApp integration but we don’t save the number of the person who is WhatsApping in a conversation variable.

Resolution

If you want to store the number of a client (conversationClientId) in a conversation variable, you'll need to create a conversation variable.

In order to use it, you will need to name this variable "conversationClientId."

This will store the phone number in that variable, which can be used in a later scenario, for example, an API callout.