Hi im using kamailio 5.1 with native cfg file and using json_get_value( method) form jsonso module

When i get json string that contains strings and i need to have these strings kamailio tries to convert string i find into int and affcource it can't

then i see warning and can't get vaules of the string i have

rval_expr_eval_int(): rval expression conversion to int failed (24,6-24,14)

How to say kamailio to not convers strng to int?