I'm doing an INSERT on my backend with node.js using mssql, the problem is: when i run the code the INSERT not work and there's no log error:

str_query= "INSERT INTO t1 (id,age,name) VALUES (@ID,@AGE,@NAME) ";
 request.input('ID',sql.int,NULL);
 request.input('NAME',sql.varchar,NULL);
 request.input('AGE',sql.int,NULL);

request.query(str_query, function (err, recordset) {//doing stuff}

So basically seems impossibile to insert a null value in a INT column. Is there any way?