Steps to reproduce:
1.Create general macros in Administration=>General=>marcos
for example:
{$WEICHAT_TOPARTID} => 2
2.Create a media type with ptyon sctipts in Administration=>Media types
3.Use the marco {$WEICHAT_TOPARTID} in the media type that i create
4.make a problem,watch zabbix_server.log ,and i found the {$WEICHAT_TOPARTID} not got its value 2,