Need help with a error code on dydx

[Linda Kash]

Hi guys
I am trying with some task. And I have a error code which I don't know what it means.

This is the error code in margins
. dydx(*)
too many variables specified

The task is about moderation variables.
Dependent variable is school problems in society (which is taken by open-ended questions)
Indep variable is (woman who have children between 7-15 years at home)
Moderated variable is (parents education).

Best regards.

[Andrew Musau]

margins, dydx(*)