Dear all,

I'm attempting to add Platinum atom to the FF documents. Here are the step I'm following from the 1) "Help > Working with forcefields > To create a new forcefield type" as well as 2) the tutorial Using MAterials Studio to edit a FF" p. 257. First I import the standard Deriding into Project explorer, rename it to "Dreiding_edited". Then got to last row of "Types" tab and add Pt as you may view in the image attached. 

Afterwards, I change to xsd contaning Pt atoms and water. (image 2) and do what is indicated on p 257 of tutorial: 

"Open the Forcite Calculation dialog. On the Energy tab, click the More... button associated with Forcefield to open the Forcite Preparation Options dialog. Uncheck Calculate automatically for Forcefield types and change focus to XXX.xsd. Click the Calculate button. Check Calculate automatically again. Close both Forcite dialogs. This calculates the forcefield types on the atoms . You need to refresh the forcefield types in the forcefield document."

Question 1 ) I got no clue how to refresh the document?

Q 2) As I head over back to "Types" tab, check the checkbox "Filter by selection in" I see no atom types in there (image 3). Coudl you assist me figure out the issue?

I intend to define Morse interaction potential between Pt surface and water, that is Pt / oxygen, Pt/H in the "Interactions" tab of Dreding document. 

Your comments is much appretiated,

Serene