Advanced path movement problem

[mega21]

I want an enemy tank to launch a bullet every 5 seconds toward the player which is in this case a helicopter. After spending some time with advanced direction object and advanced path finding, finally I could achieve my goal using advanced path movement extension. For simplicity, I set my events like this:
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Start of frame-->
create new path node at X of tank and Y of tank
create new path node at X of player(helicopter)and Y of player
connect node ID 1 to ID 2 using speed 2(means fast,I dont know how to make it faster!?)
set object to bullet
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Upon pressing Space button->
Add path node ID 1 to journey
Add path node ID 2 to journey
Start movement
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A.P.M object has reached the end of the journey-> destroy bullet
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So my questions are:
1. Any way to make the bullet follow the path faster?
2. how to repeat above process upon each Space button pressing and not just for 1 time?
3. how can I set all my events so that every 5 seconds enemy fires a bullet toward new location of the player?
4. How to let bullet continue its path till it moves out of the screen rather than destroying it right at the end of its path which in many cases is inside of the screen without hitting the player?
Your help is really appreciated.

[mega21]

After hours of tweaking and clicking finally I succeeded. I'll share it here in case it will be useful for someone else too.
1. simply put 3, or 4 instead of 2 to make the bullet move along the path faster(0.5=slow, 1=normal, 2= fast, 3or4or..=even faster)
2.every4 seconds->create new path node at origin
create new path node at destination
connect node id 1 and id 2
set object to bullet
Add path node ID 1 to journey
Add path node ID 2 to journey
Start movement
with above done enemy will fire a bullet toward new location of player but it'll stop right there so I did this
Advanced path movement(APM) has touched a new node OR has reached the end of the journey-->clear path
and if there is no collision with player set the bullet to next movement(I chose bouncing ball) so that it would continue its movement to outside of the screen.
There are some other things I did but I'm not in mood to type it all here.

[happygreenfrog]

I'm glad to hear you figured it out, even without help!