Standard Output
2023-09-06 13:43:27,413 TRACE [main] org.appng.el.ExpressionEvaluator: setting variable 'a' of type 'java.lang.Integer' to value '5'
2023-09-06 13:43:27,413 TRACE [main] org.appng.el.ExpressionEvaluator: setting variable 'b' of type 'java.lang.Integer' to value '6'
2023-09-06 13:43:27,414 TRACE [main] org.appng.el.ExpressionEvaluator: setting variable 'a' of type 'java.lang.String' to value '1'
2023-09-06 13:43:27,414 TRACE [main] org.appng.el.ExpressionEvaluator: setting variable 'A' of type 'j
...[truncated 2087 chars]...
aB = 6), (b = 6), (a_b = 7), (SESSION = {foo=5, fizz=TRUE}), (a_ = 2), (A_ = 4), (aB_ = 8)]
2023-09-06 13:43:27,415 DEBUG [main] org.appng.el.ExpressionEvaluator: ${a_b} = 7 [(a = 1), (A = 3), (ab = 5), (aB = 6), (b = 6), (a_b = 7), (SESSION = {foo=5, fizz=TRUE}), (a_ = 2), (A_ = 4), (aB_ = 8)]
2023-09-06 13:43:27,416 DEBUG [main] org.appng.el.ExpressionEvaluator: ${aB_} = 8 [(a = 1), (A = 3), (ab = 5), (aB = 6), (b = 6), (a_b = 7), (SESSION = {foo=5, fizz=TRUE}), (a_ = 2), (A_ = 4), (aB_ = 8)]