how to call another project within a project

hi there,

i have two separate projects, created in SSDT.  from project A, I'm trying to call packages in project B.  I have used the execute package task and set it to be an external reference.  I'm able to set the packages in project B but when I execute the package in project A, it is telling me that it can't find any of the oledb connections and thus failed.

any help would be great.

Thanks