How to Create a Short Sign for K and M with negative values inside parenthesis

Question

So I created this custom number format

[>499999]"$"#,##0.0,,\M;[>-1]"$"#,##0.0,\K;* ("$"#,##0.0,,"M");(_@)

Sample Result:

1. 499,998 results in $499K
2. 500,000 results in $0.5M
3. 1,000,000,000 results in $1,000M
4. -500,000 results in -($0.5M)
5. -499,998 results in -($0.5M)

Question

• Is it possible for Sample #3 to become $1.0B
• Is it possible for Sample #4 to become ($0.5M)
• Is it possible for Sample #5 to become ($499K)