A3XX: Temporarily disable managed CLB or DES

Models/FlightDeck/a320.flightdeck.xml

@@ -816,7 +816,7 @@
     <animation>
         <type>pick</type>
         <object-name>alt-sel</object-name>
-		<action>
+		<!--action>
 			<button>0</button>
 			<repeatable>false</repeatable>
 			<binding>
@@ -828,8 +828,9 @@
 				<command>nasal</command>
 				<script>setprop("/sim/sounde/btn1", 1);</script>
 			</binding>
-		</action>
+		</action-->
 		<action>
+			<button>0</button>
 			<button>1</button>
 			<repeatable>false</repeatable>
 			<binding>

Nasal/FMGC-b.nas

@@ -561,7 +561,7 @@ setlistener("/it-autoflight/mode/lat", func {
 
 var toga_reduc = func {
 	if (getprop("/position/gear-agl-ft") >= getprop("/it-autoflight/settings/reduc-agl-ft")) {
-		setprop("/it-autoflight/input/vert", 8);
+		setprop("/it-autoflight/input/vert", 4);
 	}
 }
 

Systems/autopilot-dlg.xml

@@ -781,6 +781,9 @@
 			<button>
 				<legend>ALT Push</legend>
 				<pref-width>75</pref-width>
+				<enable>
+					<property>/systems/unused/unused-button</property>
+				</enable>
 				<binding>
 					<command>property-assign</command>
 					<property>/it-autoflight/input/vert</property>