Graphing compound Inequalities from math input

How can you graph a compound inequality in two variables and have the border lines, (dashed vs. solid) reflect what the student enters from a math input component? I’ve tried tinkering with it on slide 3, but only can get both border lines to be the same, not to reflect what a student types in… I realize you can’t use parseInequality in this case, so I’m wondering if there is a workaround?