How to dynamically fetch sample data, using whatif parameter value or parameter value

Hi 

I have created a sample table using the Dax sample

Sample data = SAMPLE(30, FILTER('Table 1', 'Table 1'[Field] = "Values"),0) 

This works fine.

After that I have created a WhatIf Parameter so that i could use it to pull the data to a certain record count.

What if Parameter : 

I have then used the parameter value to generate the sample data.

Sample data = SAMPLE('Sample Pull'[Sample Pull Value], FILTER('Table 1', 'Table 1'[Field] = "Value"),0)

Have also tried the below .

In this example it seems to only pickup the default value from the what if parameter which is in my case 30 as written in the code above.