I was doing some research and came across this blog post from Stephen Smith talking about the hidden Crystal parameters.  Thought I'd add it here to be picked up by the Sage forum search engine.

(From: https://smist08.wordpress.com/2012/09/15/reporting-via-macros/)

In the recorded macro above, you might notice the strange parameter “@SELECTION_CRITERIA”. If you look in the report, there is no such report parameter. Basically our API lets you set report parameters and then print the report. However there are a few other things you might want to do with the Crystal Reports API. Below is a list of these special parameters that might help you get a grip on some more aspects of the Crystal Reports API:

“@SELECTION_CRITERIA”: PESetSelectionFormula (job, asParamValue). This parameter is changed into the API to set the Selection Criteria in the report.

“@SELECTION_CRITERIA_xxxx”:  where  xxxx is the name assigned to the subreport when it was first created. This call will be translated into

job = PEOpenSubreport( parentJob, xxxx)
PESetSelectionFormula (job, asParamValue)

To set the selection criteria in the designated subreport.

“@SELECTION_ADDCRITERIA”: will add the parameter specified to the selection criteria that exists inside the report.

“@TABLENAME”: The parameter value must be in the form:

“table” “name”

Each instance of “table” will be switched to “name” before each PESetNthTableLocation call. This is done for both the main report and all subreports. You must put the table and name in quotes or the parameter will be rejected. Table names are not treated as case sensitive.

“EMAILSENDTO”:   The call will be set the email address when you are using PD_EMAIL.  This will suppress the popping up of the address book dialog.

“EMAILSUBJECT”: The call will be set the email subject when you are using PD_EMAIL.

“EMAILTEXT”: This parameter will be set the email body when you are using PD_EMAIL.

“EMAILPROFILE”:  This parameter will be set the email profile when you are using PD_EMAIL.

“EMAILPROFILEPWD”: This parameter will be set the email password when you are using PD_EMAIL. This password will be used to sign-in to MAPI.

The following are some parameters that if you create them in your report, then the system will automatically set them without you having to do any programming.

“CMPNAME”: The company name.

“ACCPACUSERID”: The Sage 300 User ID.

“ACCPACSESSIONDATE”: The session date from signon.

“ALIGNMENT”: The current alignment option.

“REGIONALFMT” : The current regional format.