Clicks a button in a SapGui tree.
SapGui.bdh
SapGuiTreePressButton( in sControlId : string allownull,
                       in sNodeName  : string,
                       in sNode      : string,
                       in sItemName  : string,
                       in sTimer     : string optional ) : boolean; 
               	 | Parameter | Description | 
|---|---|
| sControlId | The tree's unique id. | 
| sNodeName | The name of the node for which its button should be clicked. Silk Performer will try to look up the node by matching the node name. If it cannot find the node by the name or if the name is not unique, specify the node id in the third parameter. | 
| sNode | The node id identifying the node. | 
| sItem | The name of the item. | 
| sTimer | Timer name used for measurements. | 
transaction TMain
  var
    sText : string;
  begin
    // Connecting to SAP
    sConnID := SapGuiOpenConnection( " /SAP_CODEPAGE=1100 /FULLMENU 10.5.2.132 0 /3");
    SapGuiSetActiveConnection(sConnID);
    SapGuiSetActiveSession("ses[0]");
    // SAP
    SapGuiSetActiveWindow("wnd[0]", "SAP", SAPGUI_MATCH_ExactNoCase);
    SapGuiWindowAction(SAPGUI_WND_MAXIMIZE);
    SapGuiLogon("ddic", "*******", "000", "");
    SapGuiTreePressButton("/usr/tab/mtr", "NODENAME", "NODE", "ITEM");
  end TMain;