question

I use code to create the following two fields. How do I use code to check "Dynamic"?

treenode focus5 = list;
string fieldTypeName5 = "ExpressionField";
treenode newField5 = function_s(focus5, "addField", fieldTypeName5);
newField5.name = "Content";
treenode Expression5 = newField5.find("expression");
string Code5 = "Variant value = param(1);\n\
Variant puller = param(2);\n\
treenode entry = param(3);\n\
double pushTime = param(4);\n\
return /**/value.as(Storage.Slot).slotItems.length/**direct*/;\n\
";
Expression5.value = Code5;

treenode focus6 = list;
string fieldTypeName6 = "LabelField";
treenode newField6 = function_s(focus6, "addField", fieldTypeName6, 1);
newField6.name = "ID";

Thanks.