Boolean to double without changing the boolean

Im trying to make a switching signal for a DCAC inverter.

When i convert my boolean signal from the "Relational Operator" to a double signal (to run the switches), the signal changes from the correct digital switching signal into an partial digital and partial triangular signal.

So the "data type converter" do not give me the digital 1 and 0 that i want.

Which settings are necessary to get a clean 1 and 0 double signal?