Do yourself (actually, your brain) a favor and use SETOPTION('NoVarsInStrings','on'). This will eliminate th needs to use all those doubled and tripled up '$' signs.

Also, the IIF conmstruct should be
code:
iif(not $CheckBox2.Checked,'','¤')
; or
iif($CheckBox2.Checked,'¤','')
as .checked does not return "false" or "true" but -1/0.
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There are two types of vessels, submarines and targets.