i am engg. college final semester. i am doing my project work and also working part time in a programming company. now i am trying to create a sub vi with i/p and o/p. according to the tutorials controls are considered as ip and indicators are considered as op. i tried this but this is not working. and also, in the previous version of labview like 6 and 7 the icon connector will show terminals depending on no. of indicators and controls but in labview 8 it is showing constantly 8 terminals. how to choose the correct terminals. please help me to understand.. if u have any example for explaining please upload.