Send 2 double quote "" in an HL7

[mirth4phil]

We're interfacing with Epic for Materials Management. When a value is removed from our source application, Epic requires 2 double quotes "" to remove the value from Epic. Sending a blank field doesn't work.

Here is what I have in the transformer:
Message Segment: tmp['IVT']['IVT.20']['IVT.20.1']
Mapping: msg['alt_psid'].toString().trim()

Generated Script:
tmp['IVT']['IVT.20']['IVT.20.1'] = validate(msg['alt_psid'].toString().trim(), "", new Array());

So what can I put in the "Default Value" setting of the transformer to always send 2 double quotes "" along? I've tried "", \"", \"\", '""', '"'", and everything in between, but most of the time the Channel errors out on me saying that's invalid. Simply entering the 2 double quotes "" works with no error, though the HL7 field (in this case, IVT-20) is completely empty without the 2 double quotes "".

[narupley]

Any JavaScript expression will work. So try this:

'""'

[mirth4phil]

Originally Posted by narupley

Any JavaScript expression will work. So try this:

'""'

THANK YOU!

I thought I tried that? Even included in my OP that I tried it

I really appreciate your fast, and working!, reply You made my day.