More Multiboard Troubles!!!

I just cannot seem to get the mutliboards in wc3 to work for me. Here sthe new problem....
I used to have a few mutliboards that kept changing between them depending on the situation, but that didn't work so i made it so theres only 1 multiboard that clears itself and changes row/coloumn amount etc. whenever it needs to.
But its not quite working right. Whenever i clear it and set new text in the multiboard it still has the old text sitting behind the new text. The first pic shows the trigger for resetting the multiboard.

What have i done wrong, do i need to destroy the multiboard then create a new one each time? or is there another way? Because creating new multiboards doesn't work for me i hope there is another way.

Now problem no.2
I have triggers so that when a player pushes either up or down the selected text on the multiboards changes in the direction that they pushed. But this creates major problems....first off when a play pushes down, the selected text always just goes to the top option. And when the player goes over the top it should go to the bottom option, but it only goes to the second bottom option, so i can never select the bottom option.
Pics 2 and 3 represent this.

So any ideas on how to fix these problems, any help would be greatly appreciated.

Right best thing is to post up the triggers in the map. Thats where the general problem lies. WE cant get all the info from just what ur saying. Problems such as these are usualy cross linked with triggers u wouldnt think are.

Well the problems aren't actually related to other triggers, coz they dont use any vairables or run other triggers from my map, they are independent. The only trigger they would be related to are the ones that start them, but they do get started because i ran sound que's to detect problems.

Put all your if\Then elses inside of each other, you are doing something like this:
If Hero1OptionHolder = attack then
set Hero1OptionHolder = Commands
else - do nothing
If Hero1OptionHolder = Commands --> this will run allways, because you set it to "Commands" on the other if\Then\else, if you look at your trigger, you will see that this will happend with every of the variables, until it goes to the last one.