hellp everyone can you tell me plz why my mods dont work
<!-- concrete spike upgrade -->
<set xpath="/blocks/block[@name=rScrapIronLogSpike5]/property[@class=UpgradeBlock]/property[@name=ToBlock]/@value">ConcreteLogSpike7</set>
<set xpath="/blocks/block[@name=rScrapIronLogSpike5]/property[@class=UpgradeBlock]/property[@name=Item]/@value">resourceConcreteMix</set>
<set xpath="/blocks/block[@name=rScrapIronLogSpike5]/property[@class=UpgradeBlock]/property[@name=ItemCount]/@value">25</set>
<!-- Steel upgrade -->
<set xpath="/blocks/block[@name=steelLogSpike6]/property[@class=UpgradeBlock]/property[@name=ToBlock]/@value">FireSteelLogSpike</set>
<set xpath="/blocks/block[@name=steelLogSpike6]/property[@class=UpgradeBlock]/property[@name=Item]/@value">ammoGasCan</set>
<set xpath="/blocks/block[@name=steelLogSpike6]/property[@class=UpgradeBlock]/property[@name=ItemCount]/@value">50</set>
<!-- concrete spike upgrade -->
<set xpath="/blocks/block[@name=rScrapIronLogSpike5]/property[@class=UpgradeBlock]/property[@name=ToBlock]/@value">ConcreteLogSpike7</set>
<set xpath="/blocks/block[@name=rScrapIronLogSpike5]/property[@class=UpgradeBlock]/property[@name=Item]/@value">resourceConcreteMix</set>
<set xpath="/blocks/block[@name=rScrapIronLogSpike5]/property[@class=UpgradeBlock]/property[@name=ItemCount]/@value">25</set>
<!-- Steel upgrade -->
<set xpath="/blocks/block[@name=steelLogSpike6]/property[@class=UpgradeBlock]/property[@name=ToBlock]/@value">FireSteelLogSpike</set>
<set xpath="/blocks/block[@name=steelLogSpike6]/property[@class=UpgradeBlock]/property[@name=Item]/@value">ammoGasCan</set>
<set xpath="/blocks/block[@name=steelLogSpike6]/property[@class=UpgradeBlock]/property[@name=ItemCount]/@value">50</set>