Available in 3ds Max 2011 and higher.
<adsk_Utility_SimpleFloatMixer>.float_a : float
<adsk_Utility_SimpleFloatMixer>.float_b : float
<adsk_Utility_SimpleFloatMixer>.blend_amount_connected : boolean
<adsk_Utility_SimpleFloatMixer>.blend_amount_shader : texturemap
<adsk_Utility_SimpleFloatMixer>.blend_amount_paramName : string
<adsk_Utility_SimpleFloatMixer>.float_a_connected : boolean
<adsk_Utility_SimpleFloatMixer>.float_a_shader : texturemap
<adsk_Utility_SimpleFloatMixer>.float_a_paramName : string
<adsk_Utility_SimpleFloatMixer>.float_b_connected : boolean
<adsk_Utility_SimpleFloatMixer>.float_b_shader : texturemap
<adsk_Utility_SimpleFloatMixer>.float_b_paramName : string
<adsk_Utility_SimpleFloatMixer>.TheList : maxObject array
<adsk_Utility_SimpleFloatMixer>.Shader_Version : integer