ron2812 3 Posted January 8 Hi! I have a TOP network with various HDAs with parameters (using hdaprocessor nodes) Additionally I have multiple "HE_OUT" nodes to cook them separately in UE4 (I'm using Houdini Engine V2). The parameters of the HDAs are collected in the parameter interface of the final PDG-HDA. If I change a parameter in UE4 and cook the TOP-Node (that includes the hdaprocessor in his graph and corresponds to this parameter), nothing changes. Doesn't even work if I dirty the TOP-Node. Only when I dirty the TOP-Network and re-cook, I get the expected results. This isn't very practical since I don't wanna dirty & cook my whole network. Maybe this is a bug, or I'm doing something wrong? What I wanna achieve is this: A parameter change in UE4 only dirties the corresponding hdaprocessor (and everything below). When I re-cook the Top-Node everything below the dirtied hdaprocessor should re-cook - nothing else. PS: I tried to dirty the node via Python in the callback of the parameters, but this seems to mess up the UE4/HE connection so that nothing is cooked anymore when I re-cook inside UE4. Thanks, Ron Quote Share this post Link to post Share on other sites