question

Object ASRSVeh = Model.find("ASRSvehicle1"); // AsRS Vehicle Ref
ASRSVeh.setProperty("AvailableOnStart",0); // 1 for checking and 0 for unchecking the checkbox 

The set property was found in the property table.

https://docs.flexsim.com/en/24.1/Reference/Tools/PropertyTables/PropertyTables.html#app

ASRSVeh.LabelArray = [1,2,3];//LabelArray is the labelname 

For array operations refer the Flexscript API's

FlexScript Class - Array (flexsim.com)

treenode GlobalLists = Model.find("Tools/GlobalLists"); // Removing all tasksequence lists 
//Before creating new
for(int i=1;i<=GlobalLists.subnodes.length;i++)
{
   string ListType = GlobalLists.subnodes[i].find(">variables/listType").value;
   if(ListType == "TaskSequence")
    {
      GlobalLists.subnodes[i].destroy();
    }
}


treenode list = Tools.create("List","TaskSequence");// Tools API
treenode focus = list;
string fieldTypeName = "ExpressionField";
treenode newField = function_s(focus, "addField", fieldTypeName);
newField.name = "bound";
treenode Expression = newField.find("expression");
string Code = "/**Custom Code*/ Variant value = param(1);\
   Variant puller = param(2);\
   treenode entry = param(3);\
  double pushTime = param(4);\
   return 5;";
   Expression.value = Code;
 list.find(">variables/fields/age").destroy(); // Removing first two fields
 list.find(">variables/fields/distance").destroy();