Type resolution on String concatenation seems to have a problem

Test case added to CoreConfidenceTest:

public static interface Services

public void testStringConcatenation() {
// debugging MVEL code, it seems that MVEL 'thinks' that the result of the expression:
// "Drop 5%: "$sb+" avg: $"$av" price: $"+$pr
// is a double, and as so, he looks for a method:
// Services.log( double );
// but finds only:
// Services.log( String );
// raising the error.
String ex = "services.log( \"Drop 5%: \"$sb+\" avg: $\"$av\" price: $\"+$pr );";
ParserContext ctx = new ParserContext();
ctx.setStrongTyping( true );
ctx.addInput( "$sb", String.class );
ctx.addInput( "$av", double.class );
ctx.addInput( "$pr", double.class );
ctx.addInput( "services", Services.class );
try

catch( Throwable e )

}