SWITCH_DECLARE(switch_status_t) switch_channel_set_variable_var_check(switch_channel_t *channel,
const char *varname, const char *value, switch_bool_t var_check);
-SWITCH_DECLARE(switch_status_t) switch_channel_set_variable_printf(switch_channel_t *channel, const char *varname, const char *fmt, ...);
+SWITCH_DECLARE(switch_status_t) switch_channel_set_variable_printf(switch_channel_t *channel, const char *varname, const char *fmt, ...);
+SWITCH_DECLARE(switch_status_t) switch_channel_set_variable_name_printf(switch_channel_t *channel, const char *val, const char *fmt, ...);
SWITCH_DECLARE(switch_status_t) switch_channel_set_variable_partner_var_check(switch_channel_t *channel,
const char *varname, const char *value, switch_bool_t var_check);