How to refer to sibling variable value ?

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I couldnt access sibling value from within nested hash item definition.

Non-working example:

<#assign parent={
    'sibling1': 'sibling 1',
    'sibling2': sibling1 + ' sibling'
}>

or

<#assign parent={
    'sibling1': 'sibling 1',
    'sibling2': parent.sibling1 + ' sibling'
}>

I had to reserve to a variable outside the hash definition to work:
<#assign val='sibling 1'
    parent={
        'sibling1': val,
        'sibling2': val + ' sibling'
    }
>

Is there a way to refer to sibling value from a hash item definition ?

-- 
Do not pursue the past. Do not lose yourself in the future.
The past no longer is. The future has not yet come.
Looking deeply at life as it is in the very here and now,
the practitioner dwells in stability and freedom.
(Thich Nhat Hanh)

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<div dir=3D"ltr">I couldnt access sibling value from within nested hash ite=
m definition.=C2=A0<div><br><div>Non-working example:</div><div><br></div><=
div>&lt;#assign parent=3D{</div><div>=C2=A0 =C2=A0 &#39;sibling1&#39;: &#39=
;sibling 1&#39;,</div><div>=C2=A0 =C2=A0 &#39;sibling2&#39;: sibling1 + &#3=
9; sibling&#39;</div><div>}&gt;<br clear=3D"all"><div><br></div><div>or</di=
v><div><br></div><div><div>&lt;#assign parent=3D{</div><div>=C2=A0 =C2=A0 &=
#39;sibling1&#39;: &#39;sibling 1&#39;,</div><div>=C2=A0 =C2=A0 &#39;siblin=
g2&#39;: parent.sibling1 + &#39; sibling&#39;</div><div>}&gt;<br clear=3D"a=
ll"></div></div><div><br></div><div>I had to reserve to a variable outside =
the hash definition to work:</div><div>&lt;#assign val=3D&#39;sibling 1&#39=
;</div><div>=C2=A0 =C2=A0 parent=3D{<br></div><div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 &#39;sibling1&#39;: val,</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 &=
#39;sibling2&#39;: val + &#39; sibling&#39;</div><div>=C2=A0 =C2=A0 }</div>=
<div>&gt;<br clear=3D"all"></div></div><div><br></div><div>Is there a way t=
o refer to sibling value from a hash item definition ?</div><div><br></div>=
-- <br><div class=3D"gmail_signature">Do not pursue the past. Do not lose y=
ourself in the future. <br>The past no longer is. The future has not yet co=
me. <br>Looking deeply at life as it is in the very here and now, <br>the p=
ractitioner dwells in stability and freedom.<br>(Thich Nhat Hanh)</div>
</div></div></div>

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