# \[Csnd\] Questions on using opcodes built from Faust (parameters) **URL:** \ **Category:** The Csound Mailinglist\ **Created:** [September 15, 2026, 8:03pm UTC](https://forum.csound.com/t/csnd-questions-on-using-opcodes-built-from-faust-parameters/2550 "2026-09-15T20:03:17Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Jeanette\_C2](https://forum.csound.com/letter_avatar_proxy/v4/letter/j/b5a626/32.png) [@Jeanette\_C2](https://forum.csound.com/u/Jeanette_C2)\ **Post date:** [September 15, 2026, 8:03pm UTC](https://forum.csound.com/t/csnd-questions-on-using-opcodes-built-from-faust-parameters/2550/1 "2026-09-15T20:03:17Z")
Hello again, so now I can load an opcode which was compiled from Faust using faust2csound. So it is an external library. Now, I wonder how the parameters work. Is there a system to it, or is it trial and error? I assumed that the parameters to the Csound opcode might be in the order of their appearance in the Faust dsp code. But that isn't right. I could only work out one parameter safely. Anyway, Csound would only accept six parameters, whereas the Faust code specifies 7 hsliders. Is that perhaps a limit I should be aware of? I'd appreciate any help. Best wishes, Jeanette ---
**Author:** ![Jeanette\_C2](https://forum.csound.com/letter_avatar_proxy/v4/letter/j/b5a626/32.png) [@Jeanette\_C2](https://forum.csound.com/u/Jeanette_C2)\ **Post date:** [September 16, 2026, 3:12pm UTC](https://forum.csound.com/t/csnd-questions-on-using-opcodes-built-from-faust-parameters/2550/2 "2026-09-16T15:12:38Z")
Hi Eduardo, thanks for that tip. With a little more digging I found the answers. By default k-rate parameters are ordered alphabetically. Prefixing the names of UI components with n where n is an integer, you can specify the order of parameters to be used. -- Just in case anyone else might be wondering. Best wishes, Jeanette Eduardo Moguillansky, Sep 16 2026: