Retirement tax questions

One additional question on this.  The instructions also say to include any post Dec 31st contributions made that were designated for 2019.  So that's for any amount that we might be contributing prior to April 15th earmarked for 2019, correct?  I'm not sure I understand the ask for value of Dec 31st if we still have a 2019 contribution to make.  The Dec 31st value is not a cost basis and will still be off by market volatility as any dividends within the underlying holdings.  So if I have a value of $50k at Dec 31st and I'm over 50 yrs old with plan to put in $7k for 2019, then $ value for this question would be $57k, correct?