Baby not interested in solids?

My daughter is 6 months old, Ive been trying to feed her a little pureed food every day, but she just spits it all out, I've tried all different kinds of flavours, Ive finally stayed with Heinz Baby rice which I make with her usual milk and I give her it before she has her bottle, it just all comes back out, my family and friends told me to persevere but its been a few weeks now.