--- branches/new_design/OOPSE-4/src/UseTheForce/ForceField.cpp	2004/11/15 23:00:32	1740
+++ branches/new_design/OOPSE-4/src/UseTheForce/ForceField.cpp	2004/11/19 17:56:32	1758
@@ -80,13 +80,13 @@ void ForceField::addAtomType(const std::string &at, At
 
 }
 
-void ForceField::addAtomType(const std::string &at, AtomType* atomType) {
+bool ForceField::addAtomType(const std::string &at, AtomType* atomType) {
     std::vector<std::string> keys;
     keys.push_back(at);
     return atomTypeCont_.add(keys);
 }
 
-void ForceField::addBondType(const std::string &at1, const std::string &at2, BondType* bondType) {
+bool ForceField::addBondType(const std::string &at1, const std::string &at2, BondType* bondType) {
     std::vector<std::string> keys;
     keys.push_back(at1);
     keys.push_back(at2);    
@@ -94,7 +94,7 @@ void ForceField::addBendType(const std::string &at1, c
 
 }
 
-void ForceField::addBendType(const std::string &at1, const std::string &at2,
+bool ForceField::addBendType(const std::string &at1, const std::string &at2,
                         const std::string &at3, BendType* bendType) {
     std::vector<std::string> keys;
     keys.push_back(at1);
@@ -103,7 +103,7 @@ void ForceField::addTorsionType(const std::string &at1
     return bendTypeCont_.add(keys);
 }
 
-void ForceField::addTorsionType(const std::string &at1, const std::string &at2,
+bool ForceField::addTorsionType(const std::string &at1, const std::string &at2,
                               const std::string &at3, const std::string &at4, TorsionType* torsionType) {
     std::vector<std::string> keys;
     keys.push_back(at1);