Can a texture map be set to SmokeOpacityMap from MaxScript?

[Galagast]

I'm able to access the map indexed at #9 based in this list:

Code:

for i in 1 to 9 do format "[%]: %\n" i $FumeFX001.standard[i]
[1]: SubAnim:Fire_Parameters
[2]: SubAnim:Smoke_Parameters
[3]: SubAnim:Fuel_Parameters
[4]: SubAnim:Smoke_Color_Gradient
[5]: SubAnim:Fire_Color_Gradient
[6]: SubAnim:Fire_Opacity_AFC
[7]: SubAnim:Density_Map
[8]: SubAnim:Smoke_Opacity_AFC
[9]: SubAnim:Fire_Map

But I'm unable to set it using the codes below:

Code:

>> foo = checker()
>> $FumeFX001.standard[9].value = foo
** system exception **
>> (($FumeFX001.getShader())[9]).value = foo
** system exception **

It always returns a system exception.
Tested on FumeFX 3.5.5, 3dsmax 2015