Calendar problem (Start Date and End Date)?

[saumyashah90]

if(Sub_Dept='Red','qmem://<abc.png>',

if(Sub_Dept='Amber','qmem://<pqr.png>',

if(Sub_Dept='Green',qmem://<xyz.png>','qmem://<lmn.png>')))

Please help me with expression using startdate and end date

Date={'>=${Start_Date}<=$(End_Date)'}

[alexandros17]

try this

Date={'>=Start_Date<=End_Date'}

hope it helps