Properties needed by your ant build can be specified here (in standard properties file format):
# comment
name1=value1
name2=$VAR2
These are passed to amx_eclipse_ant like "-Dname1=value1 -Dname2=value2".
Always use $VAR style (even on Windows) for references to Jenkins-defined
environment variables. On Windows, %VAR% style references may be used
for environment variables that exist outside of Jenkins.
Backslashes are used for escaping, so use \\ for a single backslash.
Double quotes (") should be avoided, as amx_eclipse_ant on *nix wraps parameters in quotes
quotes and runs them through eval, and Windows has its own issues
with escaping.. in either case, use of quotes may result in build failure.
To define an empty property, simply write varname=
Please refer to TIBCO Documentation for any detail