How can I make the missing block to appear

[seojinwooo]

I read this. App Inventor Tutorials and Examples: Inject | Pura Vida Apps
There is this block.

But in my project the block is not appear.

How can i do?

[TIMAI2]

You have to make it by dragging out the second block onto your blocks editor, name it "inject" and add the variable "id" to it using the mutator.

http://ai2.appinventor.mit.edu/reference/blocks/procedures.html

[seojinwooo]

oh~~!!
thank you
Than how can make join block to change like this?

[Alaqmar_Bohori]

Right click on the block and select inline input

[seojinwooo]

thank you so much

[seojinwooo]

But the line is appear only two.
how can i increase line to 4.

[Alaqmar_Bohori]

This way
add as many strings as you like