Hi every one

i use material studios to edit dreiding forcefield in forcefield plus,but i have two questions.

(1)i edit the van der waals terms with LJ-6-9 potential,but the D0 is 0 and R0 also looks strange.Here is the picture.i think if well depth is 0,the LJ-9-6 potential suppose to be 0,too.Is there anything wrong.

(2)i use the statement "Currentforcefield=>"Dreiding"" in script to invoke the Dreiding forcefield which i have edited.But the text say the forcefield is Dreiding when the dynamics is complete.And it seems to be default Dreiding forcefield.And i want to know how to use the edited forcefield in script.