Here is a simplified version of a macro I wrote:

#macro my_macro(picture_name)
  #local my_hf = height_field {picture_name};
  ...
#end

When I call the macro with some picture name :
  my_macro("the_pict_name")
I get the following error message :

"Parse Error: Expected 'map file spec', string identifier found instead"

I get no error when I replace the line inside the macro with :

  #local my_hf = height_field {"the_pict_name"};
  ...


I've tried to put the picture with my application include files and in other
folders of my system include files with the same result.
By the way, I use Pov_Ray 3.7 unofficial on a mac.
Any idea to solve this problem ?

Thanks for your help.

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