I am using  Reactive . 

you just need to use the Refresh Data widget then on your aggregate

Do I need to use filter on my aggregate before refresh data ?  

If you are you filtering the aggregate with the slider value, yes.

Use the slider variables to filter.

Yes I want to render my graph according to my slider value . I add a filter in my aggregate  but I got the error about data type. so the slider gives a decimal value and column in my aggregate on which I have a filter has a data type of Time . so I had a javascript widget in my flow and converted the slider value into instance of Date and passed it in outputparameter which is assign to a local variable . now filter doesnt give any error . so after adding filter . I added refresh data in my flow . 

in the filter aggregate, you can convert the decimal to time by using the function NewTime(DecimalToInteger(SliderValue), 0, 0)

I add the above function in filter . I was not getting slider variables in filter so I assigned them to local variable which were visible in filter expression tab . as I have two local variable for slider startinteval and emdinterval . my filter looks like this [valuefromcloum >= localVariableforstartinterval  or valuefromcolumn <= localVariableforendinterval ]. I want a filter so that I get values in between my startinterval and endinterval also including startinterval and endinterval .I used OR because when I used AND in the filter the graph doesnt render when the application starts . now I am getting a error message which says Error Executing Query .

I am new to outsystems . kindly help me

Send a screenshot of the aggregate filters

The error is happening because the start and end are empty.

You need to set a default value or include a condition to execute the filter only when the values are not empty.

If(start <> 0, "Filter Condition", True)

Thank you error got resolved 

Great! Please mark the answer as solution. Thanks.

sure aslo can you please help me with something else too ?

sure

so I have to add two sliders . first one will set start time and second one will set end time . so when start time one works nicely but when I set  end time value it doesn't work properly . sometimes it doesn't work at all . can you please help me with this ?  

Why don't you use Range Slider Interval widget? You can choose start and end in the same widget.

https://success.outsystems.com/Documentation/11/Developing_an_Application/Design_UI/Patterns/Using_Mobile_and_Reactive_Patterns/Interaction/Range_Slider_Interval

I used that too but I am facing same issue. 

It's hard to guess the problem without more details.

Debug it so you can find the values of the variables at each point and why they are not working as expected.

can I send u my file ?

ok

Here 

Hi, this is my file 

Send oml file, not oap

Here 

You need to use a single filter, not two.

When you move the slider the first time, only one value changes, the other stays null. Add the code in red and remove the other filter.

If(start <> 0 and end <> o, GraphicalDatum.DeliverTime >= NewTime(DecimalToInteger(start), 0, 0) or GraphicalDatum.DeliverTime <= NewTime(DecimalToInteger(end), 0, 0), True) 

Thank you so much for helping me . I am new to outsystems and was confused . you helped me and guided me  . Thank you