Lack of economic and social ties

I applied for UK business visitor visa for 1 week only, I supplied all the documents including the invitation letter from the company I'm going to visit. ECO said I'm not satisfied about my ecnomic and social ties in my home country.

My supervisor wrote in his letter that I'm doing my PhD and I have 3 kids who will be here during my travel with my wife and she is also doing her Ph.D, however, I did not attach any proof for my kids nor my wife in the first time, I did so only for myself as I did not know.

Anyway I'm going to re apply and this time will provide all documents along with my kids school registration.

For ecnomic ties I'm going to provide my ownership of two appartments in my home country.

I also attached our collaborative work with the company I'm going to visit (scientific publications).

For sure we did flights and hotel reservations in the first time.

We prepared new letters from our side and the accommodating company side as well to give more details of the visit.

All the visit expenses are covered by the accommodating company, and we stated that clear in letters from our and their side, invitation letter as well as additional supporting letters because of the first refusal are all ready.

Do I have to do anything else?

Thanks