>>sqlexec(iCH, "insert into table (field1,field2) values (?oRec.field1, ?oRec.Field2)")

You are sending a string to SQL Server that includes references to an object that exists only in your application. Try:

cSql = "Insert into table(field1, fields2) values ("
cSql = cSql + "'" + oRec.Field1 + "', "  && Field 1 contains a string, needs single quotes
cSql = cSql + STR(oRec.Field2,5,0) + ")"  && Field 2 contains a number, but we are creating a string here
SQLEXEC(iCH,cSql)