How to pass context variable data from 1 tRunjob to another tRunjob?

[rp2018]

I have 3 tRunjob components running within 1 job.  I need to pass the context variable from StartJob_test to ExecuteStageJobs.  

[fdenis]

you can pass context from parent to children.
set context to your job,
set context into trunJob Component.

[TRF]

StartJob_test is a child job, so you should have a look at the following link to learn how to pass values between main and child jobs in both directions https://www.talendbyexample.com/talend-returning-values-from-subjobs.html