expression for automatic switch (in switch sop)

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Hi everybody, I have a short question

Is there an expression I can write in the switch sop, so that the switch sop switches to the second input one frame after the last keyframe in the first input is reached?


Thanks in advance
Achim
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and I forgot,

the same also for the first keyframe, so the switch sop should use input 2, until the firstkeyframe in input 1 is reached, then switch to input 1, … until last keyframe of input 1 is reached, and switch back to input 2
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Why not just keyframe the channel and make all the segments constant() ?
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Hi edward,

I could keyframe it, but it want it to automatically update whenever I change the timing of the keys in the first input. If its not possible I will go the keyframe way.

Thanks again
Achim
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