Any way to change array dimension?

Say I have this

Global array$[1,20]

and I want to change it to

Global array$[20,20]

How can that be done?

Multi dimensional arrays post has an example of resizing an array of arrays (using slices) and a multi-dimensional array (using temp arrays).
Baffled By Arrays
explains the differences in possible arrays.

Sorry, but there is no way to resize multidimensional arrays without loosing your data.
Slicing only works for 1-dimonsional arrays.

'resizing 1-dim
Array$[] = Array$[..newLenght]

'multi dim with loosing data
Array$[,] = New String[20,20]

There is a work around for this called 'Arrays in Arrays'
There are some threads for this, just search a bit ;)

I tried with a pointer but that didn't work either >.<

Didn't the link I have help either?

Haven't had time to try it, but I will :)

You can't do array=array[[..20],[..20]] ?

@Tonyg he wants a bespoke answer, not an off the peg link ;)

I don't think so AngelDaniel.

The purpose I'm using the array for is some x,y level data. Basically I do tilemap[10,11] to check what sort of tile exists there. The level must be of variable sizes, so one time the tilemap array could be [10,10], the next time it could be [100,15]. Oh wait, just thought of something heh, I guess it could work :)

The level doesnt have to change size though does it?
It just has to be one size, then for a NEW level a different size.
So just kill the old one, and then make a new one.
(When I say kill, I mean just point the array name to the new one)

Just found the answer to my question :)

local myarray[10,10]

print myarray[9,9]

myarray = new int[100,100]

print myarray[99,99]

1-dim solution, so: can be resized!

mapdata[x+mapwidth*y]=mapdata

Not what you want perhaps, but at least a semi-clean solution.