When using dynamic variables in my system prompt, can the assistant catch or read the dynamic variable in the first message? I'm trying but it's not working https://cdn.discordapp.com/attachments/1211484481848873020/1335361449412923402/image.png?ex=679fe3c3&is=679e9243&hm=a47f070237898539a2f5e90d0ca6f72c7bcf2c5dc5899a739de4e65298cb34bc&