Hi Chuckists, chuck -s test:walk-sample:silence-rest:loop:ap-ppa-appp:3-1-2_1-2-3-4-5-7-6 test.ck is as follows: <<>>; for(0=>int i; i < me.args(); i++){ <<>>; } and outputs: 5 :(int) 0 walk-sample 1 silence-rest 2 loop 3 01-001-1000 4 3-1-2_1-2-3-4-5-7-6 i undestand that ChucK has only atof and atoi to get values from incomming strings. and i but 01-001-1000 is/are three vectors: [0,1], [0,0,1] and [1,0,0,0]. and 3-1-2_1-2-3-4-5-7-6 is/are actually two vectors: [3,1,2] and [1,2,3,4,5,7,6]. the first arguments are stringed options passed to ChucK scripts, seems okay. i need these two separate ordered sets of vectors.. i am thinking of sending each value independently (test:.....:4:6:9......) separating each vector by, say, 999. and each set of vectors by 9999 any better idea?