Model has no constant named(SOLVED)

Questions
1

I am trying to draw a model with custom shader. But when I write :

model.set_constant("#model", "tint", vmath.vector4(LED.WIDTH, LED.HEIGHT, LED.WIDTH/LED.HEIGHT, 0))

I get error:

ERROR:GAMESYS: 'game:/go#model' has no constant named 'tint'

I add tint to fragment constants in material.Also i have in shader:

uniform lowp vec4 tint;

If i change material from my material to model material, setting tint work.
Changing fragment program to default model fp fix it.
What i am doing wrong?

2

I understand. Look like shader throw all unused uniforms. Add use in code, all work

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