Parameters name in the statement must be prefixed by a colon ( :).
//Prepare SQL Query for multiple executions
HPrepareSQLQuery ( Insert , connection ,
hQueryWithoutCorrection... ,
"INSERT INTO employees VALUES (:name, :firstname, :age
)" )
...
//Set param values; Execute
Insert.name = EmpName
Insert.firstname = EmpFirstName
Insert.age = EmpAge
HExecuteQuery (Insert)