Not sure if I'm repeating the question or concept.

How do I convert the below sample to the below string format (may not be correct JSON format)

```
[{ "Name":"Test1","check":"true},{ "Name":"Test2","check":"true},{ "Name":"Test3","check":"false"}]

```

string format with appending - for false

Expected o/p:

```
"Test1","Test2","-Test3"

```

I have tried concatenating, but it always ends up with 

```
"Test1,Test2-Test3"

```

But I am looking for 3 separate string separated by comma. Any hint would help