Grid with filter?

Hi, I am trying to make a grid with filter above. I wrote this SAIL:
= load(
local!BUfilter,
local!pagingInfo: a!pagingInfo(
startIndex: 1,
batchSize: - 1,
sort: {
field: "InvestmentMain.InvID",
ascending: false
}
),
with(
local!datasubset: if(
isnull(
local!BUfilter
),
rule!getAllInvestments(
local!pagingInfo
),
rule!getInvestmentByBU(
local!BUfilter,
local!pagingInfo
)
),
a!dashboardLayout(
firstColumnContents: {
a!textField(
label: "Filter by Bu",
value: local!BUfilter,
saveInto: local!BUfilter,
refreshAfter: "KEYPRESS"
),
a!gridField(
totalCount: local!datasubset.totalCount,
columns: {
a!gridTextColumn(
label: "ID",
data: local!datasubset.data.InvestmentMain.InvID,
field: "InvestmentMain.InvID...

OriginalPostID-97336

OriginalPostID-97336