I have a report which has a drop down and some date fields to chose from and displaying the data as bar chart field.

Can you please share the SAIL Code.

Can you attach code snippet here.

@vinitl522, @sparshs: Do find the code snippet as below:
load(
local!v1:a!paginginfo(),
{
a!sectionLayout(),
a!dropdownField(),
with(
local!table1:a!queryEntity(),
local!table2:a!queryEntity(),
local!datasubset:fn!todatasubset(union(local!table1.data,local!table2.data),local!paginginfo),
{
a!sectionlayout(<>),
a!barChartField(
categories{<>},
series:{<>}
)
}
)
}
)

In the line where function fn!todatasubset used - treat local!paginginfo as local!v1

Hello Jaishankarj, I am assuming the value which you are saving the dropdown value is passed in the query entity to fetch the filtered result.
Since the code snipped is not complete, Can you please modify the code as mentioned below:
load(
local!v1:a!paginginfo(),
with(
local!table1:a!queryEntity(),
local!table2:a!queryEntity(),
local!datasubset:fn!todatasubset(union(local!table1.data,local!table2.data),local!paginginfo),
{
a!sectionLayout(<Start Date Time and End Date Time>),
a!dropdownField(<Drop Down confiuguration>),
a!sectionlayout(<>),
if(rule!utils_checkisnull(local!datasubset.data), a!textField(label: "No Data", readOnly: true),a!barChartField(
categories{<>},
series:{<>}
)
)
}
)
)

Let me know your observation.

@vinitl522: Thanks for this but to fix the issue I have already provided the if condition to check whether there is data returned or not and forcefully brought the control there before displaying the bar chart. With this approach I may not need to bring the other parameters within the with() block. I want to understand when the data has been fetched why I am getting a blank white screen. If am making a change to the drop down it is displaying me the data and returning back to the previous option also works fine. Any thoughts?

Can you please share you complete code snippet. And also let me know if the local!table1 and local!table2 query entity, do they have any inputs.
Can you display the output of local!table1 and local!table2 in two text fields and share the screenshot here.