Is it possible to fade opasity mask only?

Development Rendering
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I’m having trouble with making only the opacity mask to fade away. The idea is that I have a plane that was bent as a sphere and when it’s like that it doesn’t use opacity mask as seen in the picture

293170-upqcdb-ighk.jpg
293170-upqcdb-ighk.jpg1920×1080 355 KB

And while this sphere is unwrapping the opacity mask should slowly fade in and looks like the picture in attachments. I tried to do it with dether and some arithmetic operations but it didn’t work.

I wanted to know if it’s even possible to do so, and if it is then how to do it? :frowning:

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2
  • Switch your Blend Mode to Translucent
  • Right click on material and Add ScalarParameter (or LMB + 1 and RMB->convert to param)
  • Multiply with your mask and connect to opacity node

293180-opacity.png
293180-opacity.png1030×601 252 KB

And now it should do what you want (i hope so).

[Here][2] is tutorial how to manage params and change them in Blueprints

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