$GOSUB (execute subroutine)

$GOSUB executes a subroutine defined by the [SUB] tag. The subroutine to be executed must be defined before the $GOSUB function appears.

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Syntax
Values
Example

Syntax

$GOSUB(subroutine-name)

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Values

subroutine-name

For the subroutine name, you can use alphanumeric characters and the underscore (_). However, a numeric character cannot be used as the first character of the subroutine name. Note also that case is considered significant in subroutine names.

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Example

The following example creates a subroutine to perform the processing for outputting a message according to the value in the session information MSG:

[SUB]
  ECHO
  [IF]
    MSG = '1'
  [THEN]
    [SET_VALUE]
      $ECHO(ECHOMSG)
  [IF_END]
[SUB_END]
 
[BEGIN]
  [SET_VALUE]
    MSG = $GETSESSION('MSG')
 
    ECHOMSG = 'Hello world'
    $GOSUB(ECHO)
[END]

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