MivaScript Builtin Function, Miva Merchant 9+
miva_setlogmask( maskpri ) <mvt:assign name="g.return_value" value="miva_setlogmask( maskpri )" />
Causes all subsequent calls to miva_writelog to be ignored unless they specify a priority that is included in the maskpri argument. Will return failure unless the miva log is open.
a string containing a list of priorities. Each priority may be any of the words listed below. Commas and/or spaces separate the priorities. An empty string is permitted but means that all subsequent miva_writelog calls will be ignored.