How can I call a method which defined in projectA from projectB?

I have created a project suite ProjectSuite1 and have created 2 projects projectA and projectB under the project suite. I want to call a method which defined in unit1 of projectA from projectB. Is it possible?



I have already followed section "Calling Routines Declared in Another Project" to added the projectA under project suite ProjectSuite1. Now, I want to know how to create reference of unit1 in projectB. I tried " 'USEUNIT projectA.unit1". But seems it is not a correct way for it.