Update Signal.lua

Author: lucasmz-dev

src/ReplicatedStorage/Signal.lua

@@ -94,7 +94,7 @@ local function assert(condition, errorMessage)
 	-- function on which assert was called on.
 	-- Assert usually errors on the function it was called, not on the top one.
 
-	if not condition then
+	if condition then
 		return
 	end