copying package to robot

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Hello everyone,

I tested my developed package on my computer. It works well. Now I want to test this package on the robot. So I copied "install" file from PC to robot. In the robot I can find my package in dirction. The direction is right. But when I try to use "rospack find xxx" I can find this package. At the same time there are other packages in "install" file. These packages are copied on robot as well. But these packages can be found when I use "rospack find". What is wrong with my own package?

Thanks!!!