Hi, I'm in big trouble. I'v been trying for a long time now to change an argument in a running function. As you can see in my script i set a certain "centralpos" ("70000")to buf.pos as a central position in my soundbuffer and i let my function LFOtoPOS circle around it. Once the "spork" instruction has started the process i can't figure out how to addresss the argument "centralpos" to change it on the fly or by another function or parameter. Some help please ... Kind regards, Herman ---------------------------------------------------------------------------------------------- me.sourceDir() + "sound.wav" => string filename; if( me.args() ) me.arg(0) => filename; SndBuf buf => dac; filename => buf.read; 1 => buf.pos; .5 => buf.gain; spork ~ LFOtoPOS(70000); fun void LFOtoPOS(int centralpos) { TriOsc lfo => blackhole; 1 => lfo.freq; centralpos => buf.pos; while (true) { 1::samp => now; centralpos(10000*lfo.last())$ int => buf.pos; } } // time loop while( true ) { 1000::ms => now; }