why is my button not clickable?

Development Programming & Scripting UI
,
1

I create a button widget, which i can add to my inventory widget

image
image2555×1148 190 KB

image
image2527×1292 213 KB

I add button which this:

image
image1952×861 228 KB

In the game it looks like:

image
image708×626 8.23 KB

But if i click on the button nothing happend, when my mouse cursor is on the button it remain unchanged

2

{
if (InventoryClass)
{
if (!IsValid(InventoryWidget))
{
InventoryWidget = CreateWidget(this, InventoryClass);
if (IsValid(InventoryWidget))
{
InventoryWidget->AddToViewport();
bIsMenuOpen = true;
bShowMouseCursor = true;
FInputModeUIOnly Mode;
Mode.SetWidgetToFocus(InventoryWidget->TakeWidget());
}
}
else if (IsValid(InventoryWidget) && !InventoryWidget->IsInViewport())
{
InventoryWidget->AddToViewport();
bIsMenuOpen = true;
bShowMouseCursor = true;
FInputModeUIOnly Mode;
Mode.SetWidgetToFocus(InventoryWidget->TakeWidget());
}

	else if (IsValid(InventoryWidget) && InventoryWidget->IsInViewport())
	{
		bIsMenuOpen = false;
		InventoryWidget->RemoveFromParent();
		bShowMouseCursor = false;
		FInputModeGameOnly InputMode;
		SetInputMode(InputMode);
	}
}

function to open inventory