Problem with C# Clasher

I tried the AVEVA C # example for clasher but I have the following error message: "(69,85) Clasher run may not be made unless the override option is used". Does anyone have a solution? Is it really possible to use the C # clasher?
I can't set override option of Clasher in C#


//
// Clasher
//
// CheckAll
ClashOptions opt = ClashOptions.Create();
opt.IncludeTouches = true;
opt.Clearance = 10.0;


ObstructionList obst = ObstructionList.Create();
ClashSet cs = ClashSet.Create();


bool bResult = Clasher.Instance.CheckAll(opt, obst, cs);
if (bResult)
{
// inspect clashes
Clash[] aClashes = cs.Clashes;
for (int i = 0; i < aClashes.Length; i++)
{
DbElement first = aClashes.First;
DbElement second = aClashes.Second;
ClashType ctp = aClashes.Type;
Position pos = aClashes.ClashPosition;
}
}

I tried the AVEVA C # example for clasher but I have the following error message: "(69,85) Clasher run may not be made unless the override option is used". Does anyone have a solution? Is it really possible to use the C # clasher?
I can't set override option of Clasher in C#


//
// Clasher
//
// CheckAll
ClashOptions opt = ClashOptions.Create();
opt.IncludeTouches = true;
opt.Clearance = 10.0;


ObstructionList obst = ObstructionList.Create();
ClashSet cs = ClashSet.Create();


bool bResult = Clasher.Instance.CheckAll(opt, obst, cs);
if (bResult)
{
// inspect clashes
Clash[] aClashes = cs.Clashes;
for (int i = 0; i < aClashes.Length; i++)
{
DbElement first = aClashes.First;
DbElement second = aClashes.Second;
ClashType ctp = aClashes.Type;
Position pos = aClashes.ClashPosition;
}
}