调用子vi无效

[小明321]

一个很弱的问题，最近在调用子vi的时候，select a vi，选择好vi后，面板上没有出现子vi的图标，调用不了，请问怎么回事？

谢谢～ 

[ian_fung]

are you able to open, view and run the vi by itself?