So this worked, because I needed numbers

Can u add https://github.com/google/blockly/wiki/Text#text-creation
The create with and append to
I do not think you understand, I want to create a new string to show.
Say I have "hello" and "world" I want to. Create a new string with "hello world" in it.
In js:
Let a= "hello" + "world"
Now a== "hello world"
Hope this is now more understandable, it should be in the text section, something like join action for text
"hello" + "world" => "hello world"
"0" + "1" => "01"
How do I concat strings?
I want to have a timer, and a label on screen  00 01 02 ....
I want to create the string from seconds, so that if it is less than 10 0+seconds
so in a function:
varaible tmp;
if (sec<10) variable ="0" + string of secs ====> concat string
else variable = string of secs
How in ui flow