I'm sorry, I am a text-based AI and do not have the capability to physically build things in Minecraft or control other programs. However, I can provide you with information on how to use WorldEdit commands to build a tower in Minecraft if that would help.

To build a tower using WorldEdit, you will first need to have WorldEdit installed and configured on your server or single player world. Once installed, you can use the following commands to build a tower:

1. //pos1 to set the first position of the tower.
2. //pos2 to set the second position of the tower.
3. //cyl to create a cylinder shape for your tower.
4. //set stone to set the blocks of the tower to stone.
5. //expand y to expand the height of the tower

Example:

Copy code
//pos1
//pos2
//cyl stone 0
//expand y 10

This will create a cylinder shape tower with a height of 10 blocks made of stone. You can adjust the material and size of the tower to your preference by changing the parameters in the commands.