Access Continuous form - conditional formatting based on two fields

I have a continuous form I am trying to setup conditional formatting on. I have two fields - assigndue and assigndone. Both are date fields. I want assigndue to have red text when the assigndue date is past due and when assigndone is not filled in (null or blank). I have tried a number of different expressions but I just can't seem to get it to work. Here are a couple i have tried.

([ASSIGNDUE]<"date") And (IsNull[ASSIGNDONE])
([ASSIGNDUE]<"date") And ([ASSIGNDONE]="")

Thanks in advance!
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Rey Obrero (Capricorn1)Commented:
remove the " on the word date

([ASSIGNDUE]< date()) And (IsNull[ASSIGNDONE])
Still more syntax errors.

[ASSIGNDUE]< date()  And IsNull([ASSIGNDONE])

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filtrationproductsAuthor Commented:
That worked. Thanks!!

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