The grid of tasks displaying correctly, and the filter text field is displaying, however the filter doesn't work.

see the below script - use just to follow as sample, do not copy paste as is.

local!FIELD_IDX_TASK_NAME: 0,
local!FIELD_IDX_TASK_PRIORITY: 4,
local!FIELD_IDX_TASK_STATUS: 5,
local!FIELD_IDX_TASK_ASSIGNED_TO: 6,

local!reportFilters: {
if(
isnull(
local!titleSearch
),
{},
{
field: local!FIELD_IDX_TASK_NAME,
operator: "LIKE",
value: "*" & local!titleSearch & "*"
}
),
if(
isnull(
local!statusFilter
),
{},
{
field: local!FIELD_IDX_TASK_STATUS,
operator: "EQUAL",
value: local!statusFilter
}
),
if(
isnull(
local!assignedToFilter
),
{},
{
field: local!FIELD_IDX_TASK_ASSIGNED_TO,
operator: "EQUAL",
value: local!assignedToFilter
}
),
if(
isnull(
local!priorityFilter
),
{},
{
field: local!FIELD_IDX_TASK_PRIORITY,
operator: "EQUAL",
value: local!priorityFilter
}
)
},
          
          local!datasubset: getPortalReportDatasubset(
reportId: local!portalReportId,
pagingInfo: local!pagingInfo,
contextIds: {},
filter: local!reportFilters
),
          
          a!gridLinkColumn(
label: local!datasubset.columns[local!COL_IDX_TASK_NAME].label,
field: local!datasubset.columns[local!COL_IDX_TASK_NAME].field,
data: if(
local!datasubset.totalCount = 0,
{},
apply(
a!processTaskLink(
label: _,
task: _
),
merge(
local!datasubset.data[local!COL_IDX_TASK_NAME].cells.value,
local!datasubset.data[local!COL_IDX_TASK_NAME].cells.drilldown
)
)
),
alignment: local!datasubset.columns[local!COL_IDX_TASK_NAME].alignment
),

see the below script - use just to follow as sample, do not copy paste as is.

local!FIELD_IDX_TASK_NAME: 0,
local!FIELD_IDX_TASK_PRIORITY: 4,
local!FIELD_IDX_TASK_STATUS: 5,
local!FIELD_IDX_TASK_ASSIGNED_TO: 6,

local!reportFilters: {
if(
isnull(
local!titleSearch
),
{},
{
field: local!FIELD_IDX_TASK_NAME,
operator: "LIKE",
value: "*" & local!titleSearch & "*"
}
),
if(
isnull(
local!statusFilter
),
{},
{
field: local!FIELD_IDX_TASK_STATUS,
operator: "EQUAL",
value: local!statusFilter
}
),
if(
isnull(
local!assignedToFilter
),
{},
{
field: local!FIELD_IDX_TASK_ASSIGNED_TO,
operator: "EQUAL",
value: local!assignedToFilter
}
),
if(
isnull(
local!priorityFilter
),
{},
{
field: local!FIELD_IDX_TASK_PRIORITY,
operator: "EQUAL",
value: local!priorityFilter
}
)
},
          
          local!datasubset: getPortalReportDatasubset(
reportId: local!portalReportId,
pagingInfo: local!pagingInfo,
contextIds: {},
filter: local!reportFilters
),
          
          a!gridLinkColumn(
label: local!datasubset.columns[local!COL_IDX_TASK_NAME].label,
field: local!datasubset.columns[local!COL_IDX_TASK_NAME].field,
data: if(
local!datasubset.totalCount = 0,
{},
apply(
a!processTaskLink(
label: _,
task: _
),
merge(
local!datasubset.data[local!COL_IDX_TASK_NAME].cells.value,
local!datasubset.data[local!COL_IDX_TASK_NAME].cells.drilldown
)
)
),
alignment: local!datasubset.columns[local!COL_IDX_TASK_NAME].alignment
),