GlobalMap variable does not work?

Hi guys,I have a system with two channels



I want to use a variable from channel A on channel B



in channel A I have used in source transformer

Mapper

Variable njusa

mapping msg['PID']['PID.2']['PID.2.1'].toString()

add to : Global Map





And in channel B I want to retrieve this variable with the following in destination transformer:

$('njusa').toString()==tmp['PID']['PID.2']['PID.2.1'];



But no way, I cant achieve this to work.



¿What am I doing wrong? I have searched dozens of posts...



BTW I'm using mirth 3.1.0



thanks in advance

GlobalMap variable does not work?