<function name="upvalueid" parent="debug" type="libraryfunc"> <description>⤶ <description> ⤶ <removed>This function was removed due to security concerns.</removed> Returns an unique identifier for the upvalue indexed from func </description> <realm>Shared and Menu</realm> <args> <arg name="func" type="function">The function to index the upvalue from</arg> <arg name="index" type="number">The index from func</arg> </args> <rets> <ret name="" type="number">A unique identifier</ret> </rets> </function> <example> <description>Small example showing the type of the returned data.</description> <code>print(type(debug.upvalueid(hook.Add, 1)))</code> <output>userdata</output> </example>