Get Custom Function parameters
@status current Introduced in 2.0.0, TODO rename function
function(unsigned number) custom function number (use 0 for CF1)
nilrequested custom function does not existtablecustom function data:switch(number) switch indexfunc(number) function indexname(string) Name of track to play (only returned only returned if action is play track, sound or script)value(number) value (only returned only returned if action is not play track, sound or script)mode(number) mode (only returned only returned if action is not play track, sound or script)param(number) parameter (only returned only returned if action is not play track, sound or script)active(number) 0 = disabled, 1 = enabled