I-864a questions

[destinedrcae 0]

My spouse has filled out I-864 because she is Joint Sponsoring an immigrant. I have to complete the I-864a since I am a family member (2 of us included in our 1040 tax return). Please help me with the Line 13 & 15 (asking for a 'number'). Also, should I just list the immigrant's name in the box provided(#13)?

reads as follows
13. I, THE SPONSOR ____(my spouse's name?)______________ (print name) in consideration of the household member's promise to support the following intending immigrant(s) and to be jointly and severally liable for any obligations I incur under the affidavit of support, promise to complete and file an affidavit of support on behalf of the following _____________ (indicate number) named intending immigrant(s) (see Step-by-Step instructions)

which number are they asking for ?
Line 13 asks for a 'number'


Also in part 3,
15. I, the household member, ___(my name?)_____________ (print name) in consideration of the sponsors promise to complete and file an affidavit of support on behalf of the above __________(number from line 13) named intending immigrant.

Thanks a lot!