how can I change variable"Transparancy " on Material

icem0 is a material on Cube . Cube looks frozen. I would like to change the values of transparency on Material icem0. How can I access these values?

 

https://docs.unity3d.com/ScriptReference/Material.SetFloat.html

but you need to know the name of the property as it is in the shader's code, which may not be the same as the one displayed in the Material inspector.