diff --git a/src/gui/settings.py b/src/gui/settings.py
--- a/src/gui/settings.py
+++ b/src/gui/settings.py
@@ -40,19 +40,14 @@ class Settings(tk.Toplevel,MsgMixin):
 		self.cancelButton.pack(side=LEFT)
 
 	def refreshTresholds(self,_):
-		self.parent.sendMsg("setTresholds",tuple(),self._compileParams())
+		params=self.parent.detector.params
+		params.tresB=self.scaleTresB.get()
+		params.tresW=self.scaleTresW.get()
 
-	def setParams(self,tresB=0,tresW=0):
-		self.scaleTresB.set(tresB)
-		self.scaleTresW.set(tresW)
+	def setParams(self,params):
+		self.scaleTresB.set(params.tresB)
+		self.scaleTresW.set(params.tresW)
 
 	def sendParams(self):
-		self.parent.sendMsg("setParams",tuple(),self._compileParams())
+		self.parent.sendParams()
 		self.destroy()
-
-	def _compileParams(self):
-		params={
-			"tresB": self.scaleTresB.get(),
-			"tresW": self.scaleTresW.get()
-		}
-		return params