uiNamespace setVariable ["bis_fnc_spawn", 42];
hint str (uiNamespace getVariable "bis_fnc_spawn");
result a bunch of code, because "bis_fnc_spawn" is compiled final.
uiNamespace setVariable ["bis_fnc_spawn", nil];
uiNamespace setVariable ["bis_fnc_spawn", 42];
hint str (uiNamespace getVariable "bis_fnc_spawn");
success, result is 42