SetFloat doesn't work

Questions & Answers
1

I do a renderer.material.SetFloat("_Fresnel", 1);

but it doesn't work

What's strange is that if I do GetFloat, it returns the right value

The shader was made in Strumpy's Shader editor. I myself know nothing about shader language The code is: http://pastebin.com/q0kYRN9i

I used pastebin because this answers doesn't seem to have proper quotes.

2

The name of the property is _FresnelPower (not _Fresnel).