Worksheet_Change Event Add unique value to Sheets

hi,
i have a range Sheets("entry").range("c10:c300")
i want when i input data in above range then value automatically add to Name Range ("ABD") and Name Range ("ABE") but only unique value

for example
i add in range c10 = "ALAN" Then add "ALAN" To Name Range ("ABD") And ("ABE")
again
i add in range c11 = "BLAN" Then add "BLAN" To Name Range ("ABD") And ("ABE")
again
i add in range c12 = "ALAN" Then Don't add "BLAN" To Name Range ("ABD") And ("ABE")

thanx

Re: Worksheet_Change Event Add unique value to Sheets

its a range of cells

Re: Worksheet_Change Event Add unique value to Sheets

No its not dynamic,
ABD = Sheets("total").range("B4:B100") And
ABE = Sheets("hide").range("C10:C100")

if we need 5th value then add it to ABD and ABE but only if its a unique value, i mean if this value already not added to ABD and ABE
thanx