hey i have this material for the sky [108827-untitled.jpg] but the problem is i can’t rotate it like in the picture i want this side of the hdri to face the X axis [108828-untitled.jpg] please help.

Add a transform vector: https://forums.unrealengine.com/attachment.php?attachmentid=78538&d=1455416154 Select the new node then look at the context menu to the left, and make sure it is set to “World space to local space” -m