Error At ELEMENT INPUT VALIDATION FAST FORMULA

Summary:

I'm receiving this error when tried to compile the attached formula

"Formula BT VALIDATION, line 10, syntax error at character position 23."

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Code Snippet (add any code snippets that support your topic, if applicable):

DEFAULT for L_BT_Date IS '4712/12/31 00:00:00' (date)

inputs are entry_value(date)

L_PERSON_ID = GET_CONTEXT(PERSON_ID,0)

L_BT_Date(date) = GET_VALUE_SET('HR_GET_INPU_VALUE_BT_new','|=P_PERSON_ID='''||l_person_id||''')

if(entry_value = L_BT_Date ) then