Syntax Error in Crystal Report formula???

I'm using CR 10. I have a formula that keeps giving me the following error:

"The remaining text does not appear to be part of the formula"

The error occurs beginning and ending with the highlighted code.

Here is my code:

Code:

---

if {tblBatchDetail.carrierSCAC} > "" then
    if {tblBatchDetail.fein} > "" then
        {tblBatchDetail.carrierSCAC} & "/" & {tblBatchDetail.fein};
        if {tblCarriers.AdventCarrierCD} > "" then
            {tblBatchDetail.carrierSCAC} & "/" & {tblBatchDetail.fein} & "/" & {tblCarriers.AdventCarrierCD}
        else
            {tblBatchDetail.carrierSCAC} & "/" & {tblBatchDetail.fein} & "/(Unk)"
    else
        {tblBatchDetail.carrierSCAC} & "/(Unk)"
else
    "Unkown"
end if

---

What exactly am I missing here....a colon, semi-colon after each statement?

Use parentheses when you want to run multiple statements within an If branch. There is no End If when using Crystal Syntax.

Code:

---

if {tblBatchDetail.carrierSCAC} > "" then
    if {tblBatchDetail.fein} > "" then
    (
        {tblBatchDetail.carrierSCAC} & "/" & {tblBatchDetail.fein};
        if {tblCarriers.AdventCarrierCD} > "" then
            {tblBatchDetail.carrierSCAC} & "/" & {tblBatchDetail.fein} & "/" & {tblCarriers.AdventCarrierCD}
        else
            {tblBatchDetail.carrierSCAC} & "/" & {tblBatchDetail.fein} & "/(Unk)"
    )
    else
        {tblBatchDetail.carrierSCAC} & "/(Unk)"
else
    "Unkown"

---

I didn't know that Bruce. Thanks, that worked great!!!