Dynamic LOGO in BIP report Oracle fusion is not working

We are trying to achieve dynamic logo in BIP report according to BU. We have around 25 BU and each of them has its own logo.

Approaches tried:-

1)   Using subtemplate

While running report its giving error as Template 'LOGO' invoked but not defined. Though template LOGO is defined in subtemplate.

Import statement for subtemplate :- <?import: xdoxsl:///Custom/Procurement/Purchasing/CommonComponents.xsb?>

<?call-template:Logo?>

Subtemplate code :-

<?template:LOGO?>

<?if: SoldToLeName=’ABC’?><?call-template: logo1?><?end if?>

<?if: SoldToLeName=’BCD’?><?call-template: logo2?><?end if?>

<?end template?>

<?template:logo1?>

!!LOGO1 Image

<?end logo1?>

<?template:logo2?>

!!LOGO2 Image

<?end logo2?>

2)  Content server As mentioned in Document ID 2386643.1 is it possible to upload all the logos in content server and access them accordingly in report?