An array of strings does not work properly as a parameter.

[Mirgosoft]

Instead of displaying all buttons normally, the whole array is just shown as a name in 1 button.
For example, The Text of a single button becomes this:

At first I thought that Utility.CreateStringArray() was not supported, but then the example I gave in the second post didn't work either.

[Mirgosoft]

I did a little testing and realized that the problem wasn't the Utility.CreateStringArray() arrays.

This default example code gives me the same strange result (as 1 button with array contents displayed):

string[] buttons = new string[2]
buttons[0] = "Ok"
buttons[1] = "Cancel"

int sel_btn = SkyMessage.Show("Hello, world!", buttons, getIndex = true) as int

Hmm...

[Mirgosoft]

I think my regional settings have a comma rather than a dot separator (InvariantCulture problem).
I had a similar problem with the C# code here (First answer):
stackoverflow link

I think it would be nice to fix this in the source code as well, or just use a simple Papyrus fix like this:

int function ShowSkyMessage_Fixed(string msg_text, string[] source_btns_arr) global
    string[] btns = Utility.CreateStringArray(10, "") ; 10 buttons max with empty string values
    int i = 0
    while i < btns.Length && i < source_btns_arr.Length
        btns[i] = source_btns_arr[i]
        i += 1
    endWhile
    return SkyMessage.Show(msg_text, btns[0], btns[1], btns[2], btns[3], btns[4], btns[5], btns[6], btns[7], btns[8], btns[9], getIndex = true) as int
endFunction