### Description

When I use Kamailio 5.6 with kazoo config file, then can see error messages: ``` WARNING: <core> [core/rvalue.c:1043]: rval_get_int(): automatic string to int conversion for "63823655406" failed WARNING: <core> [core/rvalue.c:1949]: rval_expr_eval_int(): rval expression conversion to int failed (140,54-140,73) ``` This warning message related to commit bcd59d73e2fc5ae8e14cad520e726ef431f0563f. Kazoo sending timestamp using the Gregorian format and timestamp value greater than max int value. As a result, JSON string values with a timestamp cannot be parsed and converted to int.

As I understand required to add long format support into Kamailio. This was tested using this Kamailio config. ``` listen=udp:127.0.0.1:5060

######## Advanced logger module ######## loadmodule "xlog.so"

######## Generic Hash Table container in shared memory ######## loadmodule "htable.so"

event_route[htable:mod-init] { if ( 63823655406 > 0 ) { xlog("L_ERR", "*** Kamailio support long data type!\n"); } else { xlog("L_ERR", "*** Kamailio not support long data type!\n"); } } ```

### Expected behavior Kamailio is able to convert strings to long data type.

#### Actual observed behavior Kamailio was not able to convert strings to long data type.

@lazedo, probable you want to know about this behavior.