Thank you Mr. Thomas for your quick response.
I have uploaded two screenshots here:
https://ibb.co/gR22jnf
https://ibb.co/xHHyGSZ
They show my dlv settings and GTM debug show “undefined” value.
The main issue stay:
My Dlv with a name: ecommerce.purchase.actionField.revenue.
does not show any value when the event gtm4wp.orderCompletedEEC is triggered.
So any ideas why my variable show undefined value in GTM debug and also in Facebook pixel helper.
Many thanks!