[Paraview] Writer with 2 inputs

[Christian Werner]

Hello!

I have a writer plugin that takes 2 inputs, both vtkImageData. When I 
use it in Python, everything is fine, I can set the "Input" and the 
"MaskImage" explicitly to provide the two inputs. However, when I am 
using the "Save Data" dialog and choose my writer, it won't set the 
required input for port 0 (the Mask Image):

"Input port 0 of algorithm vtkMeasureMark(0x7780070) has 0 connections 
but is not optional."

I have attached the ServerManagerXML and an image that shows the dialog 
that appear with that xml. The MaskImage is not choosable.

Is there any way to realize this? I tried renaming the inputs to 
"Input1" and "Input2", but then the Filter isn't listed anymore, because 
obviously Paraview is looking for a "Input" property when calling a 
writer...


Best regards,
Christian

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