error when try to use it

[   1205547] [b2944_GTAProce]             MainThrd/ ^1SCRIPT ERROR: @msk_trackphone/config.lua:20: No such export showDialog in resource an_dialogBox^7
[   1205547] [b2944_GTAProce]             MainThrd/ ^3> ExecuteCommand^7 (^5ExecuteCommand.lua^7:4)
[   1205547] [b2944_GTAProce]             MainThrd/ ^3> callback^7 (^5@chat/cl_chat.lua^7:141)