colorants order when using DeviceN colorspace

hello everybody,

 

i have issue when i'm creating pdf devicen colorspace using pdflibrary.

i define devicen cmykog colorspace using cos objects. define each colorants in separation colorspace , use colorants definition in devicen colorspace :

 

device n dict attribute :

8 0 obj

[/devicen[/cyan/magenta/yellow/black/orange/green]/devicecmyk 18 0 r 24 0 r]

endobj

 

attribute dict :

 

24 0 obj

<</colorants 23 0 r>>

endobj

23 0 obj

<</green 20 0 r/orange 22 0 r>>

endobj

 

then when use pdfl list colorants, gives me

green

orange

 

when remove attribute entry , define colorspace this:

device n dict without attribute :

8 0 obj

[/devicen[/cyan/magenta/yellow/black/orange/green]/devicecmyk 18 0 r]

endobj

 

when list colorants using pdfl gives me

orange

green

 

like can see, not same order. , last order 1 want have, , it's important me have them in order.

 

have idea why using colorants definition reverse order?

i tried using more colorants, , when use attributes entry devicen, colorants listed in alphabetic order.

i have separation entry color convertion in pdf previsualisation, listed order used devicen definition

when "when use pdfl list colorants," api this?

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