Hi Kashaf.
I configured it exactly this way, "Cloud to Engage," using UUI.
Basically, in architect you have their variables using "update data," for example: flow.PhoneCustomer, flow.ANI, flow.EmailCustomer, etc.
You need to have a variable, for example, with name flow.SendUUI.
The value of this variable will be the "Append" of the variables that you need to send in the UUI.
flow.SendUUI = append(flow.PhoneCustomer, "|", flow.ANI, "|", flow.EmailCustomer) ---- thinking that the separator is a pipe
Finally, before the transfer block, you will add a "Set UUI Data"

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Only reference
https://help.genesys.cloud/articles/set-uui-data-action/
https://help.genesys.cloud/articles/user-to-user-information-uui-overview/
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Kaio Oliveira
GCP - GCQM - GCS - GCA - GCD - GCO - GPE & GPR - GCWM
PS.: I apologize if there are any mistakes in my English; my primary language is Portuguese-Br.
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