Hello Ferdinand,

I have now read the Guidelines, I sincerely apologize for that oversight, but nonetheless thank you for taking time to write back to me.

Yes I obviously have had a big misconception in how cinema4d worked with code and how linking would be done. I should have read what I send twice before doing so.

My idea is the "Relative references" you have in Houdini, where you can link two values to each other with a relative value to the host. The reason I said it could be done manually was me trying to explain that you can also do it with an Xpresso Driver. The reason for that was because you would have to assign the first driver to the input you would like to control to the other input that you want controlled by the first input. The reason I wanted it to be automatically was so it could be procedural and you would just need the tag and reference the "source" like doing something that clones all values in real time without having to manually set the drivers for each parameter.

Best regards
Jonas Mortensen

Hello guys, I got a question related to the GetDataInstance() Module in Cinema4d's Python tag. I got this code that I found on an old youtube channel and I wanted to test it out

import c4d

source = op[c4d.ID_USERDATA,1]; #define user data source
target = op.GetObject();  #define tag owner

def main():

    oDat = source.GetDataInstance(); #get the linked object's data
    target.SetData(oDat) #set tag owner's data to source

The problem with the code is its inconsitency, it only updates the values when either you change the values of the target manually then it pops into place or if you pull the timelinebar away from zero and back to zero then it updates and you can play around sometimes with the source values and it should copy, but this is not the case if you use the same python tag for lets say a helix, it would not update automatically nor if you mess with the timeline bar, and so I was wondering if anyone could figure out if this was due to how cinema4d updates its values/object history over time or anything in particular.

I am aware parameter linking can be done manually, but GetDataInstance applies it to all parameters instead of you choosing individualy.

Here is the file:
ParameterLinking.c4d