Android Question RegEx help for logic expressions evaluation

    txt = "{Var1} <> 3 AND ({Var2} < 5 OR {Var2} > 8"
    txt = txt.Replace("{Var1}", 2)
    txt = txt.Replace("{Var2}", 4)

    Dim a As Int = 3
    Dim b As Int = 5
    Dim c As Int = -1

    Dim logic1 As Int = IIf(a < b, 1, 0)
    Dim logic2 As Int = IIf(c > 0, 1, 0)
    
    Log(LogicalEval($"${logic1} OR ${logic2}"$))

Sub LogicalEval(s As String) As Boolean
    Dim result As Int
    s = s.Replace("OR", "+").Replace("AND", "*")
    result = e.Eval(s)
    Return result > 0
End Sub

Sub Process_Globals
    Dim e As B4XLogicalEval
End Sub

Sub AppStart (Args() As String)
    e.Initialize(Me, "Eval")
    Log(LogicalEval("(a <> b) OR ((c < 0) AND (d > 0))", CreateMap("a": 3, "b": 5, "c": -1, "d": 52)))
End Sub

Sub LogicalEval(s As String, substitutions As Map) As Boolean
    For Each kw As String In substitutions.keys
        s = s.Replace(kw, substitutions.Get(kw))
    Next
    Return e.Eval(s.Replace(" OR ", "+").Replace(" AND ", "*").Replace("~", "-")) > 0
End Sub