Amarisoft how to create dedicated bearer

[zzlna0a]

Hi all, I'm trying to create an apn called "mcptt" which will have a default QCI69 drb and a dedicated QCI65 bearer. This bearer (QCI-65) will only be created when the mobile decides to use the MCPTT service through a third-party application that has its own IP address. What do I need to configure on amarisoft? I tried to put this configuration in the mme-ims.cfg file but I am asked for TFT filters plus some GBR configurations for the QCI 65. Any ideas?

{
  access_point_name: "mcptt",
  pdn_type: "ipv4",
  ip_addr_config: "internet",
  dns_addr: "8.8.8.8", /* Google DNS address */
  erabs: [
   //default bearer 
    {
      qci: 69,
      priority_level: 2,
      pre_emption_capability: "shall_not_trigger_pre_emption",
      pre_emption_vulnerability: "not_pre_emptable",
    },
   // dedicated bearer
{
      qci: 65,
      priority_level: 2,
      pre_emption_capability: "shall_not_trigger_pre_emption",
      pre_emption_vulnerability: "not_pre_emptable",
      ip_remote_address: xx.xx.xx.xx, // IP external application
    },
  ],
},