How to use slicer selected column in formulas

[Nishant77Goel]

Help needed!
Selected Parameter = maxx(filter('Date Value', 'Date Value'[Date Value Order] = SELECTEDVALUE('Date Value'[Date Value Order])), 'Date Value'[Date Value Fields])

This returns the name of selected column in slicer created using field parameter. I have 4 columns in slicer - "LAST_OPPORTUNITY_CHANGE_DT", "MBR_PGM_CREATE_DT", “MBR_PGM_ENROLL_DT","OPPORTUNITY_CREATE_DT"

Attaching test dashboard snapshot for your reference. 

Now based on the selected column name wants to create flag if the particular date of that column falls in last 180 days.
Last 180 days flag = IF([Selected Parameter] > (TODAY()-180),"1","0")

This is giving error, value coming from selected parameter is not considered as column but is considered as text. So it's not matching up with today()-180 days condition.

The value coming from selected parameter is not considered as column but is considered as text. So, it's not matching up with today()-180 days condition. If I directly consider column the formula is working fine.

Please suggest how should I approach this problem.

[amitchandak]

@Nishant77Goel , Can you share error you are getting

Also try this one as number

Last 180 days flag = IF([Selected Parameter] > (TODAY()-180),1,0)

[Nishant77Goel]

Last 180 days1 = if(SELECTEDVALUE('Date Type'[Date Type Fields]) > (TODAY()-180),1,0)

Giving below error -