Azure Front Door on-premis Fortigate

[jacekg]

I need to use Azure Front Door as a WAF up front to on-premis Fortigate

and with the FrontDoor_Header_Check - used to Application Control function block whole traffic except FrontDoor ID

and i'm not sure how to create/which parameters to used to custom app signature for this traffic

i have only X-Azure-FDID number, i can't find anythink corrent in to Azure documentation

https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-apply-and-validate-a-custom-applica... is not really legible

does someone have any experience with this and can give me any direction?