Yes it will work. To claim siblings points you need show the following 3 things-
1) Show your relationship- You can use your passports if you have your parents name mentioned and/or birth certificate.
2) PR/Citizenship status of your sibling- You can submit sibling's PR card/ citizenship documents.
3) Proof that your sibling is actually living in Canada- You must show any documents which proves your sibling's residential address such as driving licence, bank statements, utility bills etc.
Hope it helps.