Hello @leonberger-m, I just made a test with my version 1.20 system and it seem to work as you expected. I connected my ctrlX UA client with a XM42 UA server (MTX system) and I see the structures inside the datalayer like I see them inside the UA-Expert. I tried it with some NC-Data (of the MTX) and a PLC structure. The link with the supported data types, Nick mentioned in his last post, refer to method calls. Method calls (right now) only support simple data types as input and output parameters. But this gap will be closed step by step with the next versions. Best regards Christian
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