Karel variable access from another program

    Hello, how can I access a variable that is in another program. Imagine that I'm picking from a magazine with 10 spots to pick from. I get the next available spot, pick from the spot, then I want to mark that spot as empty.

    CALL NEXT_AVAIL
    CALL PICK
    CALL INCREMENT

    The variable storing the status of each pick spot is stored in the NEXT_AVAIL program. I don't want to mark the spot as empty until the part is actually empty, so I do that in the last program, INCREMENT.

    So, I'm looking for the syntax to increment a variable in the NEXT_AVAIL program.

    For anyone interested, the FROM clause is what I needed. This allows me to access the variable from another program.

    PROGRAM array_get
    VAR
    arraySlot: ARRAY[50] OF INTEGER
    BEGIN
    --Get Array Slot
    GET_REG(58,FALSE,slot,temp,STATUS)

    coll = arraySlot[slot] MOD 24
    row = arraySlot[slot] - coll
    row = row DIV 10
    SET_INT_REG(60,coll,STATUS)
    SET_INT_REG(59,row,STATUS)

    END array_get

    PROGRAM array_incr
    VAR
    arraySlot FROM array_get: ARRAY[50] OF INTEGER
    slot FROM array_get: INTEGER
    BEGIN
    --Increment
    arraySlot[slot] = arraySlot[slot] + 1
    END array_incr

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