Adding grid parameter raise "cost limit exceeded” error.

All,
I am trying to dowload daily ERA5 on single level using the script below which works fine except when adding the grid parameter. I choosed to download 1x1 or 2x2 which should yield in smaller file size yet surprisngly, I got error of exceeding limit when adding “grid: [2,2,]” or [1,1].

import cdsapi

client = cdsapi.Client()
client.retrieve(‘derived-era5-single-levels-daily-statistics’,
{
“product_type”: “reanalysis”,
“variable”: [“10m_u_component_of_wind”],
“year”: “2023”,
“month”: [
“01”, “02”, “03”,
“04”, “05”, “06”,
“07”, “08”, “09”,
“10”, “11”, “12”
],
“day”: [
“01”, “02”, “03”,
“04”, “05”, “06”,
“07”, “08”, “09”,
“10”, “11”, “12”,
“13”, “14”, “15”,
“16”, “17”, “18”,
“19”, “20”, “21”,
“22”, “23”, “24”,
“25”, “26”, “27”,
“28”, “29”, “30”,
“31”
],
“daily_statistic”: “daily_mean”,
“time_zone”: “utc+00:00”,
“frequency”: “1_hourly”,
“area”: [90,-180,0,180], # north, west, south, and east
“grid”: [2,2], # latitude and longitude grid: east-west and north-south.

},

    "test.nc")

Any ideas.
Thanks

This happend due to the syntax of the grid: [2,2] which raise issue sometimes, the safer choise is to use the following synatx grid: "2/2" .