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How to have negative values in a constant 3 vector?(can only have positive values for some reason?)

Hi, I’m trying to store light position coodinates in for a material, but for some reason whenever I try to input a negative value in the constant 3 vector it becomes “zero”.

But the

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you should not use the Color Wheel if you want to use an actual Vector (not a color).
Click on the Vector3 and look into the Details Tab. There you can set the Numbers manually

Oh, OK. Thank you