Custom shape map and related data

Hi,

I am trying to display population per block in NY city with color saturation. I have a shape file (topojson) in which each bloc has a unique GEOID value.

I also have an Excel file with 2 columns GEOID and POPULATION (the topojson also bears the population value)

I am not sure about the best to do so, what i currently do is the following:

1) Load the Excel file

2) go to shape map and load the topojson

3) put the Excel GEOID in the 'location' bucket and the Excel POPULATION in the 'color saturation' bucket

For some reasons only 1/3 of the blocks on map are colored and show the population in the tooltip and i dont understand why.

I made sure geoid are both of the same format.

Am i doing something wrong?

thanks !