Pass TWR in to launch function so it actually has an effect.

lib/launch_rocket.ks

@@ -4,13 +4,12 @@ runoncepath("lib/node").
 
 function Launch {
   parameter APOAPSIS_TARGET is 80000.
+  parameter ATMO_TWR is 1.6.
   parameter GRAVITY_TURN_START is 8000.
   parameter GRAVITY_PITCH is 75.
   parameter INITIAL_PITCH is 85.
   parameter MINIMUM_PITCH is 5.
 
-  local ATMO_TWR is 1.6.
-
   // Configure subsystems.
   RCS off.
   SAS off.

prog/rocket.ks

@@ -94,8 +94,9 @@ row:AddLabel("Gravity Turn Pitch").
 local gravPitch is row:AddTextField("75").
 
 makeButton(top, "Execute", {
-    Launch(
+  Launch(
     targetApo:TEXT:ToNumber(),
+    targetTWR:TEXT:ToNumber(),
     gravTurnStart:TEXT:ToNumber(),
     gravPitch:TEXT:ToNumber(),
     initialPitch:TEXT:ToNumber(),