Variables in bubblecode are created the moment you assign a value to them — no declarations needed. bubblecode supports two English-like assignment styles.

put … into

The most common pattern. Reads naturally as “put this value into that container.”

put "bubblecode" into language
put 42 into answer
put true into ready
 
say language
say answer
say ready

set … to

An alternative syntax that reads well for updates.

set name to "Alice"
set score to 100
 
say name && "scored" && score

Both styles are interchangeable — use whichever reads better in context.

The add command

The add command increments a numeric variable in place.

put 0 into counter
 
add 1 to counter
add 1 to counter
add 5 to counter
 
say "Counter is now:" && counter

String concatenation in assignment

Use & (join) and && (join with space) to build strings.

put "Hello" into greeting
set target to "World"
 
-- & joins directly
put greeting & ", " & target & "!" into message
say message
 
-- && joins with a space
say greeting && target

Variable naming

Variable names are case-insensitive single words. They can contain letters, digits, and underscores, but must start with a letter.

1put 1 into counter
2put "ok" into myVar
3put 99 into score1