procedural creation of UI elements

[Mipps]

1)
Is there a posibility/library to create UI elements beside hardcoded XML?

for example when I want to create dynamicly a progressbar for each value in a table:

for i,value in pairs(table) do
spawnProgressBar(value) --dummy funciton!!!!!!
end

2)
comming from wow addon programming: In "blizzLUA" you cannot destroy an existing frame (without reloading UI)... (in blizzLUA every UI element inherits from base class "frame")
so can you do such things in "esoLUA" like: destroy(progressBar01) / progressBar01 = nil ?